For me, it depends on the genre of the game:
RTS, WRPGs, Adventures (Point&Click), Shooters (rarely, since I don't really like Shooters) => PC
Platformers, JRPGs, Sport Games, Action Adventure, Fighters, Racing => PS3
Puzzle Games, Turn-based strategy => both
I don't really know how I worked out which genre belongs to which platform, but that's how it "feels right" for me.








