I used traditional mice ever since the original ADBI mouse on my IIgs, and it stayed pretty constant until around the time i got my rev-b imac, where i switched to a kensington Orbit for awhile. i dunno, i liked it and all but in the end i switched back to a logitech MouseMan Wheel USB and then finally to a Logitech MX518 which i absolutely love. a high-res mouse just beats the pants off of a regular mouse on irregularly patterned surfaces. For my MBP i use a logitech V270, which works well enough.