Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Not High Quality
Review: When the noise canceling is turned on they do work, but they're poor quality and don't withstand consistent use for long. What's interesting is that my Sennheiser HD 280 headphones are able to block out more noise without battery assistance, are higher quality with better sound, and have lasted a lot longer. If you're looking to block out noise I'd go with the Sennheiser 280 cans. If you're looking for great quality sound, I'd recommend the Sennheiser HD 555s (though they're open so no noise blocking whatsoever).
