I use a G13. When I am on another computer I use WASD. I am an old FPS player from way back my muscle memory prefers WASD. I could never use the NUM PAD I would have to shift the keyboard to the left and if I wanted to type I would have to shift it back or twist to the left. I need the keyboard straight in front of me I have grown to use to it.

To each their own heck I knew a girl that played Quake2 with a trackball and she kicked ass.