Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Third mouse, VERY poor quality control

Logitech should be embarrassed about their quality control. I've been through three of these. The first broke after 2 months, the second broke after a few weeks, and now, the third is broken right out of the box.Why don't I switch to another brand? Because the scroll wheel is awesome. So if you like the freewheeling scroll, and can put up with a broken mouse every few months, by all means purchase the Logitech Revolution!