I purchased the MX Vertical Mouse. The price is kind of steep! But I decided to treat myself with something that would help with my arthritis and hand cramping / wrist position when using it with my computer system.

This mouse far exceeds my expectations of a mouse. Very easy to use, the way it lets my hand and wrist stay in place and the feel are far superior to any mouse that I have ever used!
I would like to suggest one idea about making the buttons a little more feel for when you click on them or select them. One thing that I have noticed is that you don't have that same sense of feel when you can't actually feel it click with the selection. Just a little would be a little better to let the user know that the selection was made.

This is a great mouse love it!