I am looking for a new mouse and I was wondering about the Logitech Cordless Optical Trackman. Its one of those with the huge ball on top so that you don't have to move the mouse. What do you call ...

I recently purchased a Logitech TrackMan wheel for work to ease my wrist pain. While I like the mouse istelf (I can't love it, that is reserved for my dear sweet Microsoft Trackball Optical), I've ...