I think it's a brilliant game.
My only problem so far is that if you run down the wing, cut into the box, turn the defender and shoot across goal from the edge of the box 9 times out of 10 it leads to a goal. (at least up to world class it does)
I'm sticking with professional at the minute, all manual settings.
How does everyone approach defending? I normally leave it to AI unless necessary but make sure I track back with a midfielder or forward.
I also second the comment that Yaya is a beast in this game. I average a goal a game with him.