Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The cheapest quality mouse they have ever made!

Bought one locally to try and like most previous logitech mice I have had(and won't game without) the left mouse button starts to mechanically stick after only 3 weeks of use! The response is amazing don't get me wrong and I love the MX series but Logitech's quality has hit rock bottom with this mouse. There is a reason there's a $30 rebate, cmon people.