Summary: Hi-Fi Quality _ While the sound reproduction is very good for the price point, it falls short of being an audiophile experience to my ear. (Please don't expect these headphones to outperform $100+ headphones.
Pros: Sound Quality _ Very good, flat response across entire frequency range. Not base-enhanced. Not tinny. What you hear is what you get.
Cons: Noise Canceling _ Outside noise is somewhat reduced by the earmuff-style headphone, but not what I would call noise-canceling.
Pros: Extremely durable headphones! Bought a pair about 3 years ago, and other than a slight, almost unnoticable rattle on deep bass sounds, worked perfectly for that amount of time. Sound cancelling works very well; when they're on, the music's the only thing I can hear. Been dropped, had the cords stepped on more times than you can count and they still worked beautifully! Bought a pair of the same brand and type after the old ones gave out!
Cons: Almost none really. Aside from the occasional slight rattle on very, very deep bass notes, and the fact that it only lasted 3 years, I guess.
Pros: The sound quality on these headphones is great. The audio is very well balanced and they feel comfortable on my head. The 3 meter cord comes in real handy when standing far from the computer of doing work on your feet while at a desktop. I've had the for 2.5 years now and have thrown them in my backpack and all around, tripped over the cable, and they still manage to stay intact and functional.
Cons: oddly enough, the cord. For just using an mp3 player or working at a desk, the long cord can tangle under the office chair or fall out of your pocket.