i use a kensington studio mouse with my 12" albook, and i would highly recommend it. it's performed stellarly for me. it has good optical tracking (not perfect, but what optical mouse is) and the touch sensitive scroll pad is very cool.
12" powerbook g4 for os x<br />emac ati graphics for os 9
Watch out for the Kensington Pocketmouse Pro Wireless. It got a bad review from MacAddict read it here, but with the note that it's a rare exception to an otherwise great line of products. I have a Logitech wireless mouse (standard white one) on one of my machines that I bought without a mouse, and have found it to be pretty good. But for the best ergonomics, I have never found anyone else's mice to measure up to Apple's one-button. It's the only one I can comfortably keep my hand on without wrist stress upward to keep from setting it off.
G4/1.3 ghz Cube, 20" iMac 2.16 ghz Core 2 duo, 1.42 mhz Mini, G4/1.33 15" AI PowerBook, G3/400 Pismo
Microsoft Optical Wheel Mouse. High quality, low price, excellent OS X support. I got this for my PC, but liked it so much that it gravitated to my Mac - the PC is stuck with an ultra cheap PS/2 mouse.
Cheers :-> Bill
__________________ "I don't know the key to success, but the key to failure is trying to please everybody."
- Bill Cosby
I use the Kensington Turbo and Expert Mouse Trackballs myself. Some say it's bulky, I personally love the feel of these big trackballs. I have three of them, one at work, one at my desk at home, and one I carry with my PB. I love'm and would easilly recommend them to anyone.
The Mouseworks software lets you customize everything about the trackball... it's the icing to an already perfect peripheral.