"Have tried a couple of other mice, looking for a vertical alignment. Some too big, or too small, or too heavy but this is so adaptable with changing angles and thumb position, I thought it would be a good one to try. Have had it a week, and having simply plugged it in (to my Mac), I have have found it really easy to use. I managed to adapt it to my needs with big hands, and need to lift and scroll (for CAD work) - so although the easing of the RSI situation will only be none in the long run (I'm not ready to stop work!), I am well satisfied."
Anonymous on the Contour Unimouse