Pros: Trackball movement is very smooth (clean off any dust from the ball before you first use it); scroll wheel feels really natural; detachable rubber-like wrist rest is comfortable.
Cons: Buttons feel "chunky" in that I have to apply a little more pressure than other mice. I prefer buttons that respond to a lighter touch. Their "click" seems almost loud in comparison to other devices.
Summary: If you like making use of more then two buttons on a mouse you will be out of luck.
Pros: I have put 3 years of heavy use on this mouse and it is still functioning smoothly. Scroll wheel is a little odd to get use to but definitely comes in handy.I'm able to scroll with my ring finger while my thumb and pinky remain on the buttons AND my middle and index are able to remain on the ball...
Cons: None. price was very fair for what I got out of it
Excerpt: Lower cost alternative to more expensive trackball offered by Kensington or Logitech. Inclusion of scroll ring was major reason I purchased (aside from price). Some people may find ergonomic not to their liking but for myself it was a perfect fit.
Pros: Accurate Controls, Ergonomic Layout, Fast Response, Smooth Movement
Excerpt: mice are a pain, even the ones which have multiple buttons and so forth, because you always run out of space with them, or end up with your arm stretched across the desk, and about to knock off the coffee cup, too. Enter the trackball with scroll ring. XLNT!
Pros: Accurate Controls, Easy To Clean, Ergonomic Layout, Fast Response, Saves Desk Space, Smooth Movement
Excerpt: In standard trackballs (e.g. Logitech), the ball is further away from the palm of the hand (compared to the buttons) than in this one. In the beginning, I thought, I can't work with this but after a week or so, it worked fine. The scroll ring is an excellent idea of course.
Pros: Accurate Controls, Fast Response, Smooth Movement
Excerpt: I've been using a Logitech Marble Mouse for 13 years. Had lots of them. I tried the Orbit Trackball because it has a scroll ring, something the Marble Mouse is missing. The buttons on the Orbit are set wider apart and flatter - not as well placed or comfortable.
Excerpt: I've had a Kensington trackball before and switched over to a mouse for years. I was having problems with my hand and thought I'd go back to it and give my hand a change up. This track ball is great, the buttons feel right and the scroll ring which is new to me is a definite improvement.
Pros: Accurate Controls, Easy To Clean, Ergonomic Layout, Fast Response, Smooth Movement