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Title: only way to go
Review: I've had this model track ball from its initial release, and still love it! Using a track ball ever since I found one available has been, for me, a perfect match. I do a lot of cad cam work, and find using a track ball a necessity. This is the best track ball I have found available to date. If I need to place a con on this track ball, its that while being cordless, its very easy to knock it off the desk while engrossed in a design on the screen.
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