I have a PS3.
Awesome machine but i just cannot get used to the controlers while plaing FPS games.
Which is like 80% of the games.
I need a mouse and keyboard like the way they were meant to be played.
PS3 driving and sports games on the other hand are great.
I love Motor Storm, etc.
You can get a wireless keyboard for the PS3. I have used mine to FReep.