Vegeta's most powerful form in all of Dragon Ball.

During the Granolah arc Vjump released a detailed page showing off Vegeta's transformation history throughout anime, manga and games. There was confusion when it was released between fans with misunderstanding on what it's context was.
It describes different forms and variants of Vegeta from Z arcs, DBS manga, GT and Xeno. Detailing all his strongest forms and from all of them it mentions Ultra Ego as his newest strongest form in Vegeta's history. What this means is Ultra Ego is the most powerful form Vegeta has to date but it's not saying it's the most powerful version of Vegeta. At this point it can be debatable on which is the most powerful version of Vegeta.
It's context is Ultra Ego as a form/transformation is superior to SSBE, LBSS4, SSB Berserk Controlled.
(Vegeta's transformation Vjump Text)
His latest new evolutionary form also appears in the Dragon Ball Super Manga!
The Dragon Ball Super manga drawn by Toyotaro currently being serialized in this magazine, he shows his new power that he acquired from his training with Beerus!! Named in response to Goku's Ultra Instinct, this new form is called Ultra Ego! The ki of this form is the same in nature as the God of Destruction. The power that is driven solely by Instincts is unbounded, the more his fighting spirit burns it becomes stronger and stronger, making it the most powerful/strongest form of all!