Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Optical mouse

This mouse can work just as well as the more expensive brand, but it is somewhat of a hassel to get it to do so. The software that is specifically for this mouse doesn't integrate with the windows environment too well, but with a little tweaking it can be used with the drivers and software for that "other" brand. However, this is not very practical and isn't really worth the trouble to save a few bucks.