I use a Razer mouse. I don't remember the exact model off the top of my head though, I'll check it later at home.
It's pretty nice. It's smaller so it fits better under the palm and it's comfortable. One of the coolest things about it is that you can adjust the sensitivity on the fly with the mouse buttons.
Speaking of buttons, it doesn't go crazy with them. I just use the left/right and mouse wheel really (there's a back/forward for web navigation too). The third mouse button is a press on the wheel, which is also convenient in some cases, but sometimes the wheel can rotate a little if you're sloppy with the press.