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Title: More Work Less Accuracy
Review: I currently use trackball to manipulate graphics 8 hours a day six days a week. I've recently developed wrist pain so I decided to change to a trackball that would use different fingers for the functions. I have done this before with the Logitech Trackman (the one with the teal ball) and the results were quite satisfactory. But it wasn't optical and the spring-loaded metal directors have worn out. So I assumed that Logitech's newest optical trackball would be a sure-fire solution. It was not. I set up the software and set all of the options (I know how to do this) and fine-tuned them again and again. The result was totally unacceptable. This trackball is so inaccurate that even when expanding graphics to 200% it is almost impossible to click on a single pixel.
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