Pros: The trackball runs smooth if operating normally. The looks and feel are good (except the scroll ring).
Cons: First off, I never abused both (one of which was a replacement) of my Kensington mouses . The scroll ring sucks, they need a better bearing than plastic on plastic. After about 1 or 2 months one of the small red trackball supports (keep ball off of cup and rotating freely) fell off, made the ball rough and obnoxious. I got the unit replaced (Kensington was more than hospitable ++) However the unit I got had a finicky USB controller, and it would disconnect from my computer at random, and very frequently. So I used my old trackball and just replaced the cup (w/ the red supports (3)) and all was well. Now my scroll ring is acting finicky. It wont detect movement, or it will and, ... well maybe not. I know how to load drivers and that avenue is shut. I just have to let people know that my case might be rare, or not; however Kensington needs to test their products more rigorously and commit to better build materials. This trackball for its cost was and isn't worth it.
Other Thoughts: I had the old turbo mouse from Kensington, and it went with me to London for 2 months, I never had problems with it. This unit ... well Its not built to last in my opinion, and for it's cost, its a darn shame. Get a mouse, or that thumb trackball if you can stand that sort of thing, but avoid this unit, unless your willing to take a risk. KENSINGTON - THINK QUALITY !!!! PLEASE
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