I dig the LogoCool (LogiTech) G5 gaming mouse! They last
about 3 years under
hard use and comes with a weight set
so you can tune it to your own grasp and the surface friction.
There's cord or cordless as you like ( I think). And the price
is about $45 for the Wired - which is what I like. I think the
Wireless one is called the G7 though and is about $55.
http://sandwitch.cocolog-nifty.com/blog/2007/04/index.html