Guys the normal logitech mice are horrible for your wrists and fingers. Do some research and stop buying the latest and greatest laser mouse that comes out every year. Get either the evoluent (
www.evoluent.com) and/or the 3m Ergonomic mouse. Search Amazon for the 3M, it has zero wrist and finger movement, you click with your thumb. The 3m is way better than the evoluent ergonomically because your arm does all the movement, but its optics are not as good. The evoluent does 2600 dpi. I have both and go back and forth. Also, get a left handed mouse (I use the ambidextrous logitech trackball) so you can give your right hand a break. If you type a lot, get an ergonomic keyboard like the microsoft natural.