A few days ago, I bought a Microsoft Bluetooth mouse for my soon-to-arrive 12" PB. While it is without a doubt the nicest looking mouse I've ever seen, the performance was horrible. The cursor was very jerkey, and the two side buttons do not work. No software I found (other than expose) supports these buttons. So, I exchanged it for the Logitech MX-700. Absolutely fantastic mouse. Even though its not Bluetooth, I love it. I know logitech is releasing a bluetooth version, the MX-900, but that supposedly doesn't support Mac either. Anyways, the cursor responds instanly. Other wireless mice I have tried always have a slight lag from when you move the mouse to when the cursor actually moves. I am amazingly impressed with this mouse. And the icing on the cake is that it recharges when you put it in the base. Anyone considering a wireless mouse should definately check the MX-700 out, it's well worth it.