These head phones sound incredible. The sound quality is like a speaker system, and they are a great companion with my iPod video. These cancel out a large percentage of noise, but not as well as the Bose headphones, of course they cost 3 times as much. With the noise cancelling feature on, i cant here a TV on at a regular volume in the same room. It is near immpossible to hear other peoples conversations, and they effectively drain out all car and plain noise. These come with adapters for a plane and stereophone, which come in handy, and also a case. My only complaint is that while wearing them for an extended period time, like a 2 hour car ride, they can become uncomfortable. Namely the top strap can hurt, and even give you a headache if it is in the wrong spot. The ear cups are perfectly comfortable. Overall I would reccomend these for someone who wants a cheaper version of the Bose QC2 set.