I bought these a couple of years ago and I love them. In a flight the headphones worked quite efficiently allowing me to watch a movie without letting the engine noise annoy me too much or having the sound level high. While not perfect for just noise cancelation, by the time you add your favorite music, you are good to go. The sound is great and the headphones are comfortable. I thought they were somewhat pricey, but they have lasted my nightly use. I recommend them.