I've used the Kensington SlimBlade for years and really love it. The only difference from the Expert Mouse is that instead of a scroll ring you just spin the ba

I've used the Kensington SlimBlade for years and really love it. The only difference from the Expert Mouse is that instead of a scroll ring you just spin the ball in place. Completely eliminated the RSI I was getting in my mouse hand and is my favorite hardware for mouse-like functionality. https://www.kensington.com/p/products/control/trackballs/SlimBlade-Trackball/ https://www.kensington.com/p/products/control/trackballs/Sli...