The best you can buy, comfortable and excellent noise cancelation. Cheaper units do nearly as well for much less though. The Bose stand out on long (8+ hr) flights due to the in ear comfort.

First impressions When it comes to home entertainment and even car entertainment I would say that Bose is a brand that most people are aware of. I always thought of them as a premium brand and this wasn't just due to their pricing.

High quality sound; well made; good features

Not for those that like their heavy bass

I bought these having left my Sony active noise isolating headphones in the lounge of an airport much to my wallets dismay. However, looking upon the bright side I figured this was a good excuse to look for new - and therefore hopefully better - solutions.

I have Misophonia which means I hate background noise with a vengeance. With these switched on there's immediate silence around me but I can hear my music perfectly. It's even good for the cinema - not plugged into my phone they cut out all the popcorn noise but I can still hear the film. Wonderful!

Brought these headphones with an adaptor for my iPhone and they don't work! Make an awful clicking noise through the adapter. I tried multiple adapters and still the same thing

They work great except there is no song forward ability when using a Samsung note 2 phone, there is only start and pause capability. It is amazing how they cancel out things like airplane noise, bus engine noise and lawn mower noise.

Yet another amazing pqir of headphones by Bose.. They sound amazing and also have decent noise cancelling. Compared them to my cousin's QC 25 and was surprised to see that the noise cancelling level was very close to them. Also, it has very deep bass, unlike my soundtrue over ear.

i really love it, thanks to Bose bring such a good products into the world. in the plane, car, train, no more noise, you only can fell the speed and music. Heaven~!

These Headphones beats anything out there. As a First Class world traveler, they go everywhere with me. No fuss. Don't rely on any other headphones but the Bose Quite Comfort 20!

I bought these to use while traveling and flying since they don't take up nearly the amount of space that my Bose headphones do. The sound seems well balanced, no too much bass. I had to try all three earpieces to find, surprisingly, that the small option fits best in my big ears.