if you're doing fast swerves with RTS games or FPS games, you want to not have a mouse pad
i've tried a bunch of mouse pads, even the really nice looking ones with glary effects and a bunch of colors, they suck. yes, the ones that promise you excellent performance, on various websites, they suck. i'm playing starcraft, and I can't even setup my units properly because of the freakin' unwated swerves that come and go.
just get a nice Logitech mouse, where the sensors can pick up strongly according to the slightest movement