Instruct: Classify Amazon reviews into positive or negative sentiment
Query: These are good for the money (especially now)

Contrary to the terrible sound that others have been claiming, I think that these are among the best headphones I have ever owned in terms of sound quality (and I consider myself an audiophile). The noise canceller ups the bass quite a bit (if you happen to like that kind of thing) and muffles out all surrounding conversations. My only problem with them is the design of the noise canceller. The switch is hard to use and the cord is barely long enough for the canceller to make it to my belt loop. Also, I dunno what you guys have been saying, but I have always been able to use the headphones with or without a battery in the canceller. I bought these when they were a new model for $50 and I still think it was worth it. It's been 2 years with them now and they are still great.