I'm not big on trackpoints or UltraNav, and as such I've always used small, made-for-laptops USB mice. Currently I'm using a nice small optical mouse with scroll-wheel and retractable USB cord, which weighs just barely 1.5oz
Now that I ordered a new T42p today, which comes with Bluetooth, I came to the conclusion that perhaps a wireless mouse would be even better.

That, and the USB ports on the T42p are on the left hand side, and most mice made for laptops come with very short cords that work best when the USB port is in the back or right-hand side of the laptop...
Does anyone have any recommendations for a GOOD quality, yet small in size, Bluetooth mouse? Ideally something complimentary to Thinkpad's awesome black case.

Price is not as important as ergonomics and size/weight. Small is good, but small with bad ergonomics is bad. It should also have an "off" switch for when it's in the bag so it's not draining a set of batteries every day.
Anyone?