Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great for the first few days but...

This mouse has some very good things going for it. After you get used to where you put your hand it's very natural feeling. The weighting choices makes it so all people can get approx. their favorite weight. The button to change sensitivity is made for first person shooter gaming. Going from sniper rifle to assault rifle sensitivity preferences is a snap. That being said, Mine started to double click after a few days. It's gotten progressively worse and now I'm back to using my old mouse. Avoid this mouse at all costs. Unless you don't like to have to click the button 2 times to double click. In that case this is the mouse for you.