Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best hair straightener ever!

I bought this hair straightener 4 years ago and it still works better than any other hair straightener I've tried, including ones bought from fancy pants beauty supply stores which sell at about the same price point. You get a serious bang for your buck with this hair straightener. My hair-cutter also says they're the best and not to mess with the colored ones because for some reason they just don't work as well!