which one do you prefer/recommend for RSI alleviation?
-The Rollermouse is by far a superior pointing device overall. I enjoy the flexibility of using gestures on the Apple Trackpad as well. I can actually use them both for a variety of different functions. Using them as a pair, I feel I have pointing devices covered.
-The Apple Trackpad is quite large and won't fit well in the middle of the Kinesis Contoured.
-I've found a mouse, regardless of how ergonomic, is still a very un-ergonomic and cumbersome tool (use a Rollermouse for a couple weeks and you will completely understand that statement).
-A quality trackball is the next step up from a mouse (a very big step). I love my Kensington. With all the programmable buttons and clickable scroll wheel, no other trackball compares for overall functionality. Maybe they will re-issue this model with an optical trackball.
Another option is the stylus/pad combo. I still have not used these. The one overriding issue I can't get over, is that you need to pick up then HOLD the stylus, and put it down to do data entry.