A lot of people here seem to love the Ikari. I want to check one out. It doesn't look like it would fit my hand like I want (for FPS or RTS gaming), but I may be wrong.
I do like Steelseries. I have one of their headsets, a mousepad from them, and a 6G keyboard is being shipped to me now. The keyboard may not stay, depending on how I like the black cherry switches, but my point is that I think Steelseries makes great stuff. Razer makes great mice, though...