Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This is a terrible version of a once great mouse

I owned an IBM Optical Scrollpoint Mouse and used it extensively for 3+ years of for my office mouse; doing mostly CAD drafting and modeling. I liked it so much that when it finally died, I tried to replace it. In fact, I ordered two, so that I'd have a spare for future use.The mouse I receive is by Lenovo (IBM spun off it's PC arm to them). The form is the same on this new Lenovo version, but don't be fooled. This mouse is terrible. They have replaced the scroll wheel with a weird toggele switch that is alternately way too sensitive and non-responsive. It is completely non-ergonomic and requires repositioning of your hand to use. Sadly, I am now trying out ergo mice again. Don't make the same mistake I did!