Originally posted by Sanki:

strange I'm lefty as well... everything I do is by my left hand, but I use right hand for the mouse.

and about programmable mouse, even the cheapest ones comes with software to change binding to anything, for example dirt cheap Modecom SHINOBI you can change every button on this mouse and it's designed to fit right and left.
The expensive ones lasted a few months before they broke

I'm a big fan of cheap, consumer-grade mice as well; the kind that are made by the "house brand" of the local big-box store are relatively rugged, and the price is a clincher. Even though they die on a regular basis, they're still worlds better than the "pro-gamer quality" equipment when one factors in useful lifetime vs price. I'd rather pay $30 twice a year than $90 once a year... especially when the $90 model is typically a twice-per-year purchase, too.