"Effective noise-cancelling headphones."4.5 starson by disneybob
Pros: Comfortable; well made, highly portable, nice features.
Cons: Wish it had an in-line mic for answering calls.
Summary: I've used these headphones for over a week (roughly 25 hours) and I can strongly recommend them. The artificial intelligence feature seems to work well, and I often make use of the Monitor button - it deactivates the NC feature and mutes the audio. Thus, when you are wearing these headphones and someone talks to you, rather than having to take them off, you can just press the Monitor button and have the conversation. Even better, when the annoying Pandora commercials come on, hit the monitor button for 30 seconds and avoid the irritating ads.
To my highly untrained ears, music sounds good, with just the right amounts of treble and bass.
The engineering is fantastic - they fold up into a small case for easy portability. Battery life is excellent - I got through a whole week of listening for hours a day. Make sure you use rechargeable batteries (1 AAA) to save money and help the environment. And unlike Bose, if your battery dies you can still use them, albeit without the NC.
I use these mainly while reading at coffee houses, but am looking forward to using them while flying, where I expect them to perform very well.
Overall - highly recomended.