I use the Expert Mouse at home. It's the only trackball I've been able to use for any length of time.
You may only want to consider the Vertical Mouse, though it also isn't wireless. Have had for a while, but use others for more exacting work. http://www.evoluent.com
The Apple Magic Mouse burns through batteries so quickly (even if turned off at end of every day) I can't recommend. Did surprisingly get used to its flatness/positioning though.