I used the 4x5 all the time when I lived in Asia, and was quite happy with it. It used to be really cheap, but now you cannot get it for less that Arista, I think. If you happen to be in China, and can find it in a shop or have a local order it for you, it would still be cheap.
Shanghai 35mm and 4x5 is pretty good. heard there's a lot of quality control issues with 120 but overall it's a great film
I used the 4x5 all the time when I lived in Asia, and was quite happy with it. It used to be really cheap, but now you cannot get it for less that Arista, I think. If you happen to be in China, and can find it in a shop or have a local order it for you, it would still be cheap.