Damn, this thread is thoroughly hijacked... I got a diamondback, and I like it tons more than the copperhead because of the button designs. The logitech's only have one thumb button, so I said screw them...
Laser is probably better, but get a good mousepad, a good optical, and you can barely tell the difference. Either way, I'm happy with my set-up... (screw the 60 dollar keyboards, I use my 20 buck MS comfort curve and I <3 it)
And yeah, when you pay 200+ for a 680i or 975X chipset, don't tell me you don't have 5 puny bucks to buy an optical mouse, if you don't have one already...