I had a Razer Copperhead. It was by far the best gaming mouse I have ever owned. I will be buying the DeathAdder as soon as I get the money. You really cant go wrong with Razer mouses. They cause much less than the Logitech series, they are lightning quick (2000dpi 3G Infrared Sensor), and they have won more awards than all the other companies.
The only down side is they are all wire mouses. I love the fact I don't run out of power and need to change batteries in the middle of an online game. A lot of my friends don't like it simply because it is not wireless.
Trust me and go to this site to see for yourself.
http://www.razerzone.com
I believe Best Buy sells them.