Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best deal under $20

Do these things sound like a $200 pair of headphones? Hell no. But they have good, responsive bass, clear highs, and just overall sound great.I gave them four stars because they do leak quite a bit of sound, so it's hard to take them on the bus/wear them in a public place with other people around unless you're really keen on sharing your music with others. If you're going to be using them in private, though, or for jogging, working out, etc, I cannot recommend them highly enough.