http://www.logitech.com/index.cfm/produ ... NTID=10716
I just got this mouse for Christmas. I now have it loaded up and programmed for EQ use and I have to say it is SWEET! I don't have much use for the sensitivity switching when playing EQ but the programmable keys are nice. I DC alot and I can target my Paladin with a tweak of the roller and target my shaman tweaking it the other way!
It's light weight compared to my old Logitech MX which I still use, just on my 2nd computer. I'm very happy with it overall and for first person shooters, it's even better!