As much I hate them, it has to be FIFA for me. PES does not come close to FIFA because of the ultimate team mode. I know that PES has its own version but its so far behind FIFA. And it would honestly take me too long to get used to the PES controls and gameplay physics for me to ever even think about changing over to them. Plus, the licensing is a huge issue for me. As a Chelsea FC fan, I could not imagine having to suffer and play as London Blues or whatever we've been renamed to.