"Intellimouse with OSX Panther"
I wanted this mouse because I wanted more buttons and a tilt wheel. The mouse is really solid (if a little larger than I expected), but the software is a little convoluted. I was hoping that the tilt wheel would be good for scrolling sideways, and it does work fine on most applications. Finder yes, Firefox no, Illustrator yes. Itunes yes.
The software assigning the keys is quirky. If I want to set the wheel button to activate Expose, I have to set the button in the ms software to secondary click and in the osx prefs set expose to active on the right mouse button. Very odd.
But at 16 dollars including shipping it is a real deal, and once you have figured out the software quirks it is great.
Hopefully the Tiger mouse control panel will be smarter and then I won't need the ms software.