Travelling now, but I have quite the mousefest going on at home at the moment - getting the feel of the newer general-purpose Logi mice as well as some other gaming mice. I've had the Imperator, G9x and Orochi for a while but I'm not a particular fan of any of them - so I added the CM, Mionix and Roccat recently, and will probably round it off with the new Steelseries and maybe the QPAD. I actually only have 4 PCs/Macs at home which use a mouse, but generally speaking I like to buy a whole bunch of anything at once so that I can actually compare in a worthwhile way, then toss out what I don't like.
So far it's early days but as a clawer-when-available, I'm warming to the Spawn.
crApple: Mighty, Wireless, Magic (& the tackpad too)
CM: Spawn
Logi: G9x, Marathon, MX Revo, MX Perf
MS: Wireless Mobile 6K, Wireless Laser 8K
Mionix: 5K
Razer: Imperator, Orochi
Roccat: Kone+
& a few others not really worth mentioning, but which still see some use.