Kensington Orbit Trackball Mouse Review

is symmetrical allowing for lefties or righties

perfect for scrolling long pages or files.

you dont have to use the mouse flush. turning it on an angle provides the arch you need if your put all your hand weight on the ball of your wrist.

easy to use with index and middle fingers, ball size is not too large or too small

You can customize behaviour per App. Customization includes:
Precision / Line Movement - modes
Left/ right/ middle click (both left and right at the same time).