Your just now getting into optical mice [img]http://www.**********.com/iB_html/non-cgi/emoticons/new/smile_k_ani_32.gif[/img] ?
Optical mice > ball
I probably care more about them though because I play a lot of FPS such as Counter-Strike: Source, UT2004 and the such.
Right now I'm using a Razer Diamondback, it's a great mouse. I can't stand Logitech's MX shape.