Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Nowhere near as good as the original.

The ball is sticky and doesn't move smoothly. I had the non-wheel version for years and it still operates better. So far it appears that Logitech's tech support is pretty weak - it asks a lot of questions but they close the case without providing an answer. To follow up you then have to re-enter all of your data.