Instruct: Classify a given review as either positive or negative.
Query: Not as good as Logitech's Trackman products

I have a LOGITECH Trackman mouse. It works really well. The optical ball on the Logitech is very fluid. I purchased this Microsoft Trackball mouse due to the fact that it was on sale at Circuit City. The Microsoft Mouse is not any where near as fluid and comfortable as the Logitech. The action on the optical ball is annoying and is not as responsive and natural as the Logitech. Bottom line - if you are considering this, buy the Logitech instead. You will be much more happy! Peace.