From a design bore perspective (sorry, it's hard to switch off sometimes) FIFA really winds me up. The UI is just a whole heap of crap. It shouldn't be that hard to simply find play a match against your mates.
Ultimate team is an utter mess too. Far too much going on, and it's not worth the pay off imo. I just wish they'd sort out the offline single player stuff before trying to prat about with online etc. the rest is easy, and should be layered on top, for me.
that all said, the actual gameplay (clearly the most important part) is genius. The last few versions have been extremely impressive. I'd personally disagree with pap about it being on the rails, I think they've come a long way in resolving that, the days of only having a set number of moves that would actually lead to a goal are done.
I've also been hugely impressed with what they have done with the players/keepers dimensions. They are no longer just blocks that interact clumsily with each other, they are actual people shaped beings. Tackles fouls now generally only happen when the ball/man comes into contact with the other, like wise keepers now actually make saves as opposed to just being walls the ball bounces off if it is in the general vicinity.
have heard good things about the latest edition of PES. I actually quite enjoy the lack of names/leagues. Master League was brilliant too. Will be interested to check out the new one.