Last week I bought two SX 300 Tour racquets from two different stores, and both happened to have the same exact weight and balance point. Thought I was just really lucky but now I know Dunlop is a quality brand.
A couple of years ago I picked up a Head Extreme Pro and really liked it. I got a second one and the feel was way different because it was much heavier with a higher swing weight. I ended up selling both of them.
i bought 6 tecnifibre at 2 different time periods, and they are all the same. Had bought previously 6 wilson and instant sold them as the QC was horrendous, same as head.
Compared to the FX line he did a QC test on these are actually pretty good. Within 5 g is acceptable; anything more it is going to have a noticeable affect on the playing characteristics of the racket. If you did this test with rackets from Babolat and Wilson they would be way more off; those two are the worst. It is a shame because Volkl and Head used to be made in Austria as were Fischers which I don't think exist anymore. I will say the Dunlop is a sweet feeling frame feels like an extension of the arm pure control at it's finest. I played with it strung with their Iconic a multifilament and Explosion Tour and had tons of control even with the Iconic and that says something. I am a former college player and current 5.0 doubles player; I place a premium on control and feel on my rackets this has some of the best feel of any racket on the market currently. The only other two I would compare it with are the Yonex HD and Phantom 93p; the former two are much more demanding to use as they have significantly higher SW and static weights. But from a QC perspective I am satisfied; I think they can still improve but they appear to be moving in the right direction. Give it a try if you want a plush feeling controlled oriented racket.
They've actually been moving backwards. Their QC was great 2 years ago when they brought out the first CX200 series and since then, it has been abysmal (SX and FX). They're churning out racquets sometimes that are as far away from their published specs as you can get. The joke is they can't even find on-spec racquets to send to RUclips reviewers !! They have none !! And, they don't care :)) I have to laugh :))
@@a2casius well the rackets he specd weren't demos they were 3/8 but you are right there needs to be better QC across the board. For that reason I am leaning towards the Yonex HD. But I am torn the feeling on this CX 200 is awesome.
@@a2casius i tried it once but the grip was too big and was strung to loose. I need to try it one more time and put my own string in it. I loved the feel and plow through of the HD though I am an old school player i love flexible frames. Thanks for the suggestion though.
That is pretty darn good, I'd say. Adding strings to an 18x20 frame should up the SW by about 35pts, so taking them all near to the 318 specification. With the lighter one, adding 3g of lead at 6 O'clock on the hoop will sort out the SW without affecting the balance.
Pretty amazing that you would test these racquets without taking the plastic off of the handle, that is a fairly random extra amount of weight and change in balance
@@ThorD4602 No I seriously am not. Though I'm quite worried for you if you don't understand what he is doing. He is checking to see if they all weigh the same and share the same balance, not their absolute weight. Say a racquet weighs 300g on spec and the plastic wrap adds 2g. When you buy 3 of the same racquet and they all weigh 302g do you really need to unwrap the plastic to check whether they all weigh 300g???
@@amsd1231 I have been a professional stringer and racquet customizer since 1988, if you need any more help, I'll be happy to tell you more of how it all works.
Wilson is the worst. The don't deserve to even be in the top 5 of racquet brands. Their retail frames are junk, and most of their pros use models that are just copies of frames made by other brands. They're only the best at saturating the market.
HEAD makes some of their pro-stocks in KB, Austria (still mostly finished in China). Many of their pro-stocks, like other manufacturers aside from Yonex, are made in China.
I would say probably about 3pts. Definitely 5pt. Based on the fact I can sort of feel 1g added at 12 o'clock, but I can definitely feel 2g. I would agree 1 or 2 points are negligible unless you're a high level regular player.
The lessons here are: if you can, buy from physical retailers where you can judge racquet specs for yourself; use their machines to balance, weight and swingweight different versions of the racquet you're interested in (good retailers have these facilities); select the version of the racquet you're after (eg Clash 100) with greatest weight and swingweight. There is a subliminal message in Harry's videos (which he's entitled to do) that buying from physical stores with good stocks of given racquet types are preferable to online buying, where you might get an inferior version in the post of a given racquet with low weight and swingweight. At the end of the day, he''s a salesman and a very good one at that because he's been in business a long time and is passionate about tennis.
Many web shops like TW offer a matching service for this purpose. If you buy several raqcuets of same model, they'll make sure those are identical when it comes to numbers.
When weighing, were all the handles same size? Larger handles have more mass. Your placement also affects weight as duplicating the exact position does change the factor of both static and swing weight.
I don't like to weigh a racquet laid flat like he does. I stand it vertically on the scales, standing up on the buttcap. That way seems like you guarantee all weight is concentrated on the scale.
Harry can you explain what seems very counterintuitive? The weight (static weight for discussion purposes) is heavier than the swing weight. If I static weighted my fist a swung fist would land heavier. Yet your machines there consistently rates the raquet's swing weight LIGHTER... 😲 Can you please one day fill in the blanks on difference between weight and swing weight? Grrratsi senoire 🤔
Swingweight is not a weight measurement. Static weight measures mass in grams where as swingweight is a measure of how hard it is to swing and is measured in Kgcm2 (known as swingweight units). Comparing swingweight to static weight is like comparing your height to how fast you run :P. Like sure your height probably to some extent determines how fast you run, but ultimately they're two different measures measuring two different things.
The word weight in swing weight is actually very stupid and wrong. I would prefer to call it swing momentum as it is a measurement that you will only feel while swinging the frame (ergo weight having a speed in a circular motion on a certain radius, the arm, not your arm, but from the 10cm from the butt cap up). If you swing a hammer, then you feel 3 effects: The force pulling the hammer away from you (centrifugal force), the force needed to increase the speed of the hammer head (to get the hammer going) and the effect the hammer has while having a speed (when you are not speeding up anymore, but let the head do the work to eventually hit the nail with that impact). Swing weight is a measurement that is related to the last 2 effects. The higher the swing weight, the harder it is to get the racket face going. But on the plus side, the higher the swing weight, the more punch/ impact it has on the ball (with the same speed). The first effect can be felt to as a high swing weight can pull your joints (mostly related to your wrist). So as you can see there is a trade off and in this trade off it varies per person: You should find the highest swing weight you can handle where it doesn't hurt your swing speed and manouverability. Everyone has an optimum based on your body strength and fitness but also technique. Do you hit more through the ball with less spin, then you probably will like a higher swing weight. If you hit with plenty spin, you'll probably want a lower swing weight for a higher racket head speed. Static weight is something completely different. That is just the weight of the racket without moving (ergo static), but as rackets don't have an equal distribution of mass, it says very little about swing weight. Generally speaking, manufacturers combine a higher static weigh with a higher swing weight, but that is just by design. I customise all my rackets to a static weight of 345 grams strung with a swing weight of 322 and a balance of 30,7. That is my sweet spot. There is no brand that sells rackets with that spec, that's why customisation is key! People should not be affraid about it
@@LarzB Calling it swing momentum is wrong as well, since momentum is mass times velocity and so depends on the speed, but SW only depends on the mass distribution. There already is a correct term for it, and it's "moment of intertia".
@@Fred_P True, I forgot that word. Moment of inertia. Moment en momentum are kinda similar words though. But indeed the correct word is moment of inertia. The only problem with that is that for the average joe it doesn't mean anything. Moment of inertia is also a mass distributed based on an arm distance (the moment). So as I agree that swing momentum is wrong as well, it is better than swing weight to not confuse average joe.
Not many people are a good enough to even notice ... the racquet he is showing is my new racquet of choice having used wilson for 30 yrs their Q/C is really bad
Years ago McEnroe and Graf but then they were made in England to higher specifications. Nowadays to make more profit but not necessarily higher quality they are produced in China- should be called Beijing 200.
All three rackets have the same balance point. Racket 2 is one gram lighter than racket 1 and thus has a 6 pt lower swing weight. Racket 3 is two and a half grams lighter than racket 2 yet has a swing weight one point higher. This result doesn’t fit. Shouldn’t racket 3 have a substantially lower swing weight than racket 2? Either he wrote the figures in the wrong places or the real quality control issues lie with his scale and/or swing weight machine.
Incorrect. Sumitomo Rubber Industries (SRI) who also own the Srixon brand acquired Dunlop from Sports Direct in 2017. dunlopsports.com/love-the-game/dunlop-unveils-brand-strategy-and-enters-exciting-new-era-under-new-owners/
Appreciate the spec check which show that Balance and Swingweight on ALL these racquets are Under-Spec. I have bought more than 10 Yonex racquets in the past decade and have Never experienced variations of this extent. Yonex are made in Japan, Dunlop are made in China. In Yonex and Japanese terms, these racquets are REJECTS.
Don't forget the plastic wrap on the handles. Stock balance is supposed to be 310mm. Wouldn't be surprised if the plastic wrap moves the balance to 306.
@@transamination Plastic wrap is about 1.5g. That's a 1mm variance on balance at best. But what's the excuse with some significant under-spec on the Swingweight? Still, better to be under-spec on SW than over. Their SX line was Arm-breaking over-spec on SW at least in their first batch !! Irresponsible to release reject arm-breaking racquets onto the retail market. Suffice to say, the racquet has flopped since that marketing disaster and worse still, looks like Dunlop learnt No Lessons at all.
@@a2casius completely agree. Must be difficult for people who are not as obsessed with details as us, who buy a racquet that is far off spec and can't understand why it plays so badly.
@@transamination I guess if you're passionate enough about a subject, you'd research it enough to eradicate at least novice errors that not only may hurt your arm but also your pocket :)
@@a2casius I wasn’t thinking about the pros and Experianced, but about shaking 3 unstrung tennis rackets in the store and deciding which one (or two) is right for you! All due respect to all tennis players! I love your videos anyway :) Cheers!
@@szilagyi3000 Haha .. !! I would have been impressed if he hadn't first measured the specs and then made out as though he knew where the weight variations were !! lol
For all of you Yonex "lover's" out there, if you do just a little bit of research, you will find that Yonex also has many of their racquets manufactured in China not Japan. A lot of their products, including golf equipment, are not manufactured in Japan. You guys are living in a bubble that you want to believe in, and that's fine, no problem. But, in real world terms, you are not getting anything extra buying a Yonex racquet over a Dunlop racquet in this day of age.
Jason, incorrect. All the low end yonex rackets at lower prices (which have low or no profit margins if manufactured in Japan) are made in china. Those are the likes of feel, ace, game and junior range. All players rackets (100SL and up) are made in Japan and has superior quality / quality control over anything made in china. And yes I own and use many Yonex and Dunlop rackets and I work for one of them.
5 grams would be the equivalent of a fair amount of lead tape, depending on where the weight difference is distributed, it could def. impact how one handles vs another.
Who has ever played tennis at least at the level of performance so 5g + - knows very well .... as well as balancing a racket 320 or 325mm .... For example, I once bought 2x Head Microgel radical OS L3 4 3/8 295g ....... after braiding polyester, one rocket made me a bad swing. Weighed: 1x 295..1x 292 ...... but balance 1x 321 and 1x 325 mm.
Last week I bought two SX 300 Tour racquets from two different stores, and both happened to have the same exact weight and balance point. Thought I was just really lucky but now I know Dunlop is a quality brand.
A couple of years ago I picked up a Head Extreme Pro and really liked it. I got a second one and the feel was way different because it was much heavier with a higher swing weight. I ended up selling both of them.
I head that close serial #'s give the best spec ranges
Yep getting then from the same lot is better. When you buy them you can ask them to pick you frames close in number if they can.
love your videos keep them coming.
i bought 6 tecnifibre at 2 different time periods, and they are all the same. Had bought previously 6 wilson and instant sold them as the QC was horrendous, same as head.
Good QC is an indication of how Proud you are of your product. Tecnifibre is a very proud French company with All their products made in France.
Just received a pair of identical Head 360+ Speed Pros. Not so bad
Compared to the FX line he did a QC test on these are actually pretty good. Within 5 g is acceptable; anything more it is going to have a noticeable affect on the playing characteristics of the racket. If you did this test with rackets from Babolat and Wilson they would be way more off; those two are the worst. It is a shame because Volkl and Head used to be made in Austria as were Fischers which I don't think exist anymore. I will say the Dunlop is a sweet feeling frame feels like an extension of the arm pure control at it's finest. I played with it strung with their Iconic a multifilament and Explosion Tour and had tons of control even with the Iconic and that says something. I am a former college player and current 5.0 doubles player; I place a premium on control and feel on my rackets this has some of the best feel of any racket on the market currently. The only other two I would compare it with are the Yonex HD and Phantom 93p; the former two are much more demanding to use as they have significantly higher SW and static weights. But from a QC perspective I am satisfied; I think they can still improve but they appear to be moving in the right direction. Give it a try if you want a plush feeling controlled oriented racket.
They've actually been moving backwards. Their QC was great 2 years ago when they brought out the first CX200 series and since then, it has been abysmal (SX and FX). They're churning out racquets sometimes that are as far away from their published specs as you can get. The joke is they can't even find on-spec racquets to send to RUclips reviewers !! They have none !! And, they don't care :)) I have to laugh :))
@@a2casius well the rackets he specd weren't demos they were 3/8 but you are right there needs to be better QC across the board. For that reason I am leaning towards the Yonex HD. But I am torn the feeling on this CX 200 is awesome.
@@MMm-kp7lk Have you tried the new Yonex Vcore 95? It may fit what you're looking for :)
@@a2casius i tried it once but the grip was too big and was strung to loose. I need to try it one more time and put my own string in it. I loved the feel and plow through of the HD though I am an old school player i love flexible frames. Thanks for the suggestion though.
@@MMm-kp7lk Yes, I know what you mean, on all your points :)
Hello Mr. Harry,
what about first "manual hand test" then the machine test ?+ what strings do you recommend for this racket ?
That is pretty darn good, I'd say. Adding strings to an 18x20 frame should up the SW by about 35pts, so taking them all near to the 318 specification. With the lighter one, adding 3g of lead at 6 O'clock on the hoop will sort out the SW without affecting the balance.
Pretty amazing that you would test these racquets without taking the plastic off of the handle, that is a fairly random extra amount of weight and change in balance
Why would it matter? He is not trying to measure the balance. He is trying to see if all three have the same specs.
@@amsd1231 You are kidding, right?
@@ThorD4602 No I seriously am not. Though I'm quite worried for you if you don't understand what he is doing. He is checking to see if they all weigh the same and share the same balance, not their absolute weight. Say a racquet weighs 300g on spec and the plastic wrap adds 2g. When you buy 3 of the same racquet and they all weigh 302g do you really need to unwrap the plastic to check whether they all weigh 300g???
@@amsd1231 I have been a professional stringer and racquet customizer since 1988, if you need any more help, I'll be happy to tell you more of how it all works.
Please make quality control tests on all the mainstream brands. Let's see which one is the worst! 😄
It's Wilson, you'll find this in some of his older videos (e.g. weighing up multiple Wilson Blades)
I switched to Yonex after seeing his review. Wilson has not scored well in these reviews.
Wilson is the worst. The don't deserve to even be in the top 5 of racquet brands. Their retail frames are junk, and most of their pros use models that are just copies of frames made by other brands. They're only the best at saturating the market.
You should do one of the radical MP. Btw, love the videos
Are any racquets not made in China other than Yonex??
Prostock racquets
HEAD makes some of their pro-stocks in KB, Austria (still mostly finished in China). Many of their pro-stocks, like other manufacturers aside from Yonex, are made in China.
How many swingweight points does it take to start to feel a difference. Is 1 or 2 points negligible?
I would say probably about 3pts. Definitely 5pt. Based on the fact I can sort of feel 1g added at 12 o'clock, but I can definitely feel 2g. I would agree 1 or 2 points are negligible unless you're a high level regular player.
The lessons here are: if you can, buy from physical retailers where you can judge racquet specs for yourself; use their machines to balance, weight and swingweight different versions of the racquet you're interested in (good retailers have these facilities); select the version of the racquet you're after (eg Clash 100) with greatest weight and swingweight. There is a subliminal message in Harry's videos (which he's entitled to do) that buying from physical stores with good stocks of given racquet types are preferable to online buying, where you might get an inferior version in the post of a given racquet with low weight and swingweight. At the end of the day, he''s a salesman and a very good one at that because he's been in business a long time and is passionate about tennis.
Many web shops like TW offer a matching service for this purpose. If you buy several raqcuets of same model, they'll make sure those are identical when it comes to numbers.
Or yonnex
So where is our test at the end?
When weighing, were all the handles same size? Larger handles have more mass. Your placement also affects weight as duplicating the exact position does change the factor of both static and swing weight.
He said that the handles were all size L3 in the beginning of the video.
I don't like to weigh a racquet laid flat like he does. I stand it vertically on the scales, standing up on the buttcap. That way seems like you guarantee all weight is concentrated on the scale.
Good
I kinda think that plastic needs to come off the grips.
100%... absolutely impossible to test anything with the plastic wraps on them. Ridiculous video.
Harry can you explain what seems very counterintuitive? The weight (static weight for discussion purposes) is heavier than the swing weight. If I static weighted my fist a swung fist would land heavier. Yet your machines there consistently rates the raquet's swing weight LIGHTER... 😲
Can you please one day fill in the blanks on difference between weight and swing weight? Grrratsi senoire 🤔
Swingweight is not a weight measurement. Static weight measures mass in grams where as swingweight is a measure of how hard it is to swing and is measured in Kgcm2 (known as swingweight units). Comparing swingweight to static weight is like comparing your height to how fast you run :P. Like sure your height probably to some extent determines how fast you run, but ultimately they're two different measures measuring two different things.
The word weight in swing weight is actually very stupid and wrong. I would prefer to call it swing momentum as it is a measurement that you will only feel while swinging the frame (ergo weight having a speed in a circular motion on a certain radius, the arm, not your arm, but from the 10cm from the butt cap up). If you swing a hammer, then you feel 3 effects: The force pulling the hammer away from you (centrifugal force), the force needed to increase the speed of the hammer head (to get the hammer going) and the effect the hammer has while having a speed (when you are not speeding up anymore, but let the head do the work to eventually hit the nail with that impact).
Swing weight is a measurement that is related to the last 2 effects. The higher the swing weight, the harder it is to get the racket face going. But on the plus side, the higher the swing weight, the more punch/ impact it has on the ball (with the same speed). The first effect can be felt to as a high swing weight can pull your joints (mostly related to your wrist).
So as you can see there is a trade off and in this trade off it varies per person:
You should find the highest swing weight you can handle where it doesn't hurt your swing speed and manouverability. Everyone has an optimum based on your body strength and fitness but also technique. Do you hit more through the ball with less spin, then you probably will like a higher swing weight. If you hit with plenty spin, you'll probably want a lower swing weight for a higher racket head speed.
Static weight is something completely different. That is just the weight of the racket without moving (ergo static), but as rackets don't have an equal distribution of mass, it says very little about swing weight. Generally speaking, manufacturers combine a higher static weigh with a higher swing weight, but that is just by design.
I customise all my rackets to a static weight of 345 grams strung with a swing weight of 322 and a balance of 30,7. That is my sweet spot. There is no brand that sells rackets with that spec, that's why customisation is key! People should not be affraid about it
@@LarzB Calling it swing momentum is wrong as well, since momentum is mass times velocity and so depends on the speed, but SW only depends on the mass distribution. There already is a correct term for it, and it's "moment of intertia".
@@Fred_P Spot On :)
@@Fred_P True, I forgot that word. Moment of inertia. Moment en momentum are kinda similar words though. But indeed the correct word is moment of inertia. The only problem with that is that for the average joe it doesn't mean anything. Moment of inertia is also a mass distributed based on an arm distance (the moment). So as I agree that swing momentum is wrong as well, it is better than swing weight to not confuse average joe.
Not many people are a good enough to even notice ... the racquet he is showing is my new racquet of choice having used wilson for 30 yrs their Q/C is really bad
Two matched bad racquets is worse than one good one.
You sure about that Harry, I am playing with a new CX 200 demo and says made in Japan
Lmao
Japan, China
Designed in Japan, made in China
Ben is right
The demo may well be made in Japan. The retail versions in China.
harry review rackets and he looks at them and he poops on it
So headlight These Dunlop. Never See Balance 306
That's because it has a leather grip and is unstrung, if you added strings the balance would be higher
That's 12pts (1.5 inch) head-light unstrung, which is the specification. Certainly head-light for a 315g frame.
What are Dunlop rackets known for?
Dampening vibrations
Nowadays, Off-Spec ... Crap-shoot what you get.
Years ago McEnroe and Graf but then they were made in England to higher specifications. Nowadays to make more profit but not necessarily higher quality they are produced in China- should be called Beijing 200.
Rubber
@@weyman4317 They are painted RED for obvious reasons !! lol :))))
All three rackets have the same balance point. Racket 2 is one gram lighter than racket 1 and thus has a 6 pt lower swing weight. Racket 3 is two and a half grams lighter than racket 2 yet has a swing weight one point higher. This result doesn’t fit. Shouldn’t racket 3 have a substantially lower swing weight than racket 2? Either he wrote the figures in the wrong places or the real quality control issues lie with his scale and/or swing weight machine.
I'd ignore anything you see on this channel that veers into technical analysis
You got it backwards. Dunlop bought SRIXON.
Incorrect. Sumitomo Rubber Industries (SRI) who also own the Srixon brand acquired Dunlop from Sports Direct in 2017.
dunlopsports.com/love-the-game/dunlop-unveils-brand-strategy-and-enters-exciting-new-era-under-new-owners/
There's something deeply satisfying when a smartass get's proven wrong.
@@Fred_P why don't they call them SRIXON anymore?
@@chuckfriebe843 Dunlop has been in tennis >100 years. A far more recognisable brand in tennis than the Japanese golf company Srixon.
@@oliverdesouza5741 gotcha. I was under the impression that because Dunlop was more recognizable, they were the ones that purchased Srixon.
Appreciate the spec check which show that Balance and Swingweight on ALL these racquets are Under-Spec. I have bought more than 10 Yonex racquets in the past decade and have Never experienced variations of this extent. Yonex are made in Japan, Dunlop are made in China. In Yonex and Japanese terms, these racquets are REJECTS.
Don't forget the plastic wrap on the handles. Stock balance is supposed to be 310mm. Wouldn't be surprised if the plastic wrap moves the balance to 306.
@@transamination Plastic wrap is about 1.5g. That's a 1mm variance on balance at best. But what's the excuse with some significant under-spec on the Swingweight? Still, better to be under-spec on SW than over. Their SX line was Arm-breaking over-spec on SW at least in their first batch !! Irresponsible to release reject arm-breaking racquets onto the retail market. Suffice to say, the racquet has flopped since that marketing disaster and worse still, looks like Dunlop learnt No Lessons at all.
@@a2casius completely agree. Must be difficult for people who are not as obsessed with details as us, who buy a racquet that is far off spec and can't understand why it plays so badly.
@@transamination I guess if you're passionate enough about a subject, you'd research it enough to eradicate at least novice errors that not only may hurt your arm but also your pocket :)
you also need to take into consideration he did the SW measurement w/out string which doesn't make any sense at all. That will increase it as well.
The plural of Dunlop is Dunlops.
Hahahahaaha!
Guys! Seriously?!
I'm not buying it! Who can distinguish 5 grams by holding 2 racquets...and swingweight??? No way!
Experienced Players. After all, Tennis is a game of Small Margins. No embellishment if you can't detect small margins.
@@a2casius I wasn’t thinking about the pros and Experianced, but about shaking 3 unstrung tennis rackets in the store and deciding which one (or two) is right for you!
All due respect to all tennis players!
I love your videos anyway :)
Cheers!
@@szilagyi3000 Haha .. !! I would have been impressed if he hadn't first measured the specs and then made out as though he knew where the weight variations were !! lol
First
i have a named rishi and ur are not him. why are u impersonating him??? identity theft is not a joke JIM
@@robocop6573 Wtf?? Hahahahahahaha...
@@robocop6573 lol there are so many people named rishi, I know at least two other people with my name lol.
For all of you Yonex "lover's" out there, if you do just a little bit of research, you will find that Yonex also has many of their racquets manufactured in China not Japan. A lot of their products, including golf equipment, are not manufactured in Japan. You guys are living in a bubble that you want to believe in, and that's fine, no problem. But, in real world terms, you are not getting anything extra buying a Yonex racquet over a Dunlop racquet in this day of age.
Jason, incorrect. All the low end yonex rackets at lower prices (which have low or no profit margins if manufactured in Japan) are made in china. Those are the likes of feel, ace, game and junior range. All players rackets (100SL and up) are made in Japan and has superior quality / quality control over anything made in china. And yes I own and use many Yonex and Dunlop rackets and I work for one of them.
As if you're going to notice 5 grams. Should do a blind test
5 grams would be the equivalent of a fair amount of lead tape, depending on where the weight difference is distributed, it could def. impact how one handles vs another.
Yes, I think this is way inside margin of error for my window of perception. I would probably let 10g go unnoticed.
Depends how in tune you are with the racquet, and your playing experience... some people will notice even a 1gram difference
You can notice 5 grams. Maybe you can't, but some of us can.
Who has ever played tennis at least at the level of performance so 5g + - knows very well .... as well as balancing a racket 320 or 325mm ....
For example, I once bought 2x Head Microgel radical OS L3 4 3/8 295g ....... after braiding polyester, one rocket made me a bad swing.
Weighed: 1x 295..1x 292 ...... but balance 1x 321 and 1x 325 mm.