Another vote for Kensington. I've got several of the wired Orbit trackballs with the scroll ring, I'm very happy with them. I've used the Logitech Trackman Ma

Another vote for Kensington. I've got several of the wired Orbit trackballs with the scroll ring, I'm very happy with them. I've used the Logitech Trackman Marble as well but I think I prefer the Orbit. The scroll ring feels very intuitive. https://www.kensington.com/us/us/4493/k72337us/orbit-trackball-with-scroll-ring https://www.kensington.com/us/us/4493/k72337us/orbit-trackba...