Is the Magic Trackpad a viable alternative to the Magic Mouse on a MacBook Pro or that would be useless as there is a trackpad on the laptop already?
Have you used the Microsoft Sculpt Ergonomic on a Mac? I handled one in a shop and I was tempted. I've never encountered a PC mouse that didn't work on a Mac but there's a first time for everything, and the MS site says Windows 7/8 only.
Currently I've got a Logitech Performance MX, which I would proclaim the Best. Mouse. Ever*. had not the right mouse button developed a 'stutter' after a few months of use - unfortunately searching the interwebs suggests this is a common problem.
(*for right handed people with relatively large hands)