Cannot stand FPS controls on consoles personally. I have Rainbox Vegas 2 and I hardly play it unless I have a mate over. I just think of how much faster I would be playing with a mouse and keyz.
I may look at Frag FX in the future which is a mouse and keyboard solution for consoles but at the moment it just seems a little 'homemade' and gets mixed reviews.
So i just stick to the PC for FPS.
PS3 is still good for 3rd Person shooters like GTA etc (ahh autoaim!)
Not much skillz required!