Ahh Logitech makes great equipment
... Too expensive for me, though
.
I have a nice Ultron UM-45 that I paid 7$ for (inc shipping). It's a simple standard 3-button 800dpi black USB corded mouse with a blue-LED-lit scrollwheel. It has a very comfortable hard rubber "matte black" surface for your palm and a shiny hard-plastic surface for your thumb. Looks nice, works well (great feedback on the microswitches so they don't feel "cheap", and very good precision), with a 3 year warranty, for 7$.
http://ultron.de/produkte/21977.jpg (the pic makes it look tiny like a laptop mouse, but it's normal size and doesn't have weird proportions)