with regards to sound, this is a very good headsetThe noise cancelling features are very good ---- unfortunately, the 'phones suffer from discomfort and priceI compared these headphones, head to head, on an airplane, against the Sony MDR NC20, and there was no difference in sound - both performed excellently, and equally, within the airplane environment ---- however, the Sony ones were more comfortable and MUCH cheaperDon't even waster your time with the Bose Quite Comfort ---- grab a pair of the Sony's and you'll fall in love!