Ok, the Magic mouse is nice, it's pretty, it's got great scrolling features and it's bluetooth. But after a few days of using it all day it's a pain. The ergonomics are not ideal, nowhere near as comfortable as my Logitech gaming mouse (can't remember the name) and my wrist hurts. What is out there that is a good bluetooth mouse? They all seem a bit wishywashy to me, and the MS one I tried had dreadful latency that really bothers me. Any suggestions?