Well, I watched Avengers 2, and completely loved it.
Yes there are things that people will nitpick to death, and rightfully so, but all that matters is how you felt after you watched the film. I think it is a much stronger film then the first.
Of course it is not perfect tho, there is some things that definitely could have been better, and other things that don't make much sense given the lore.I'm sure there will be many conversations on those story elements once it hits america. Even tho this is a very long film, I just wanted more at the end.
FYI If Hulk stole Avengers 1 then Vision stole Avengers 2. You will not be disappointed with how they portrayed the Vision.