5 mice here. I'm VERY picky when it comes to this.
I have a Logitech MX510 (Blue, not the red) that has been my favorite mouse I have ever owned. I sadly retired (but still have; just collecting dust :[ ) it for being old and grimy. (Imagine 5-6 years of sweaty palm buildup, even with regular clean-ups.) There are blemishes, scratches, and the logo's rubbed out, but it's a tank and works like the day I bought it.
I went through a brief stint with a Logitech G5, which just wasn't fun for me. I had the revision with the back AND forward button on the side and "cool" design, too. I use my scroll wheel to cycle through my weapons in shooters, and the G5 was a nucking fightmare when it came to that. I was gonna sell it awhile back, but nobody wants that ish anymore. I might keep it, pawn it off, or sell for 1/4 the price since that's all I would probably get for it.
I now have a G500, which I love. It's durable, versatile, accurate, and has a nice weight to it. TECHNICALLY it's the best mouse I've used (I've "used" them all, pretty much. Death Adder, G7, MX1000, Lachesis, G9, etc) so far, but my MX510 still beats it.
I have a generic Microsoft optical mouse that's my oldest. 10+ years old. And I have a Mac wired mouse that came with the Macbook Pro.
Edited by chrisftl - 6/18/11 at 3:01am