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Title: Not a good design
Review: I have used a trackball for 2 decades, and when my Microsoft trackball died I tried to replace it, only to find that it was no longer available, and old stock models were going for $300 or more. So I tried this thing.Ergonomic placement of auxiliary buttons is not good, and the hand contorts just enough to be annoying.But the worst problem is cursor stability at the moment of the click. If you are doing precision work, don't even think about buying this trackball, because it's hard to perfectly locate the cursor. And to make clicks work properly, one must remove one's thumb from the ball before clicking or the cursor will be pulled off target.Unacceptable.
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