Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best Trackball Made.........

I bought my first Kensington Expert mouse back in 95, it made it to 2007. In 2007 I bought a new one and paid like $119.00 for it and it's still working, but I bought a new computer and just bought another one. with a 5 Year Limited Warranty how can you mess up... I'm sold for life on this trackball.