Pros I use these primarily at work and while traveling by air. They greatly reduce the fatigue caused by the droning (white noise?) of flying. Pretty comfortable, over the ear (not on the ear).
Cons I own a lot of headphones including Grado SR-60, Sennheiser HD580, and Sennheiser ER-6i. These don't sound as good as any of these and don't give the sound isolation of the ER-6i.
Summary I thnk these headphones and the Panasonic RP-HC500 are virtually identical. I did not have both at the same time. The Panasonics chirped when my hand went near the noise cancellation microphone and the ATs did not. I recall that I thought the Panasonics sounded more clear and because of that I upped the volume which in turn isolated me further from the outside. It's possible that the drivers are different in the headphones but I'm sure both companies source from the same noise cancellation supplier.
The headphones come with a nice case and all the accessories needed for travel. Battery life was good. I didn't need to change the batteries as I flew cross country and used them while waiting for my much delayed flights at the airport. I recommend these for the reasons above and though I gave away the Panasonic set, I might go with the Panasonic head phones even if the cost is a little more and would need to learn how to not make them chirp.
Pros The noise cancellation function is excellent. The audio is clear. It sill consider not so heavy. It comes with good casing and accessories. It works!
Cons Still too expensive for the average Joe. Sound muffle out when noise cancellation is off. Still big.
Summary I never know traveling on train daily to work with all the noise can be so exhausting, never realize it or knew it. After i use this headphone cancel out all the noise, i still felt good and refresh when i reach my destinations.
Pros Work well for drummers, great sound quality in passive and active modes, great value!
Cons Warm on the ears, earpieces might not fit right on some people
Summary My husband got these for Christmas and uses it when he practices drumming. He loves them because now he can turn the volume down on songs when he plays. He said that they're so good that it's sometimes difficult to hear the drums, but he can always use them in passive mode as well, so it works out perfectly for him. I liked his so much that I got myself a pair - two pairs at half the cost of Bose!
I mainly use the headphones while working, since they keep out all other distractions and help me concentrate better. As for sound leakage, if you're deaf and have the volume turned way up, that would do it. Any person with normal hearing wouldn't need to turn the volume up that high - even on a plane!
Pros Best sound of half a dozen noise-cancelling headphones I've owned or auditioned. Still possible to hear powered off, for takeoff and landing.
Cons Noise-cancelling not as good as Bose.
Summary Look around a plane, particularly up front. Everyone with the money is buying Bose without thinking it through. They're making a mistake.
Why trust any of us yahoos you don't know, when you can get the straight scoop from Bose execs? It simply isn't possible to A/B your own phones against Bose phones in-store. Bose has locked away the plug, and mixed their own audition music. Can you smell setup? The execs aren't stupid. Bose noise-suppression is better, but Audio Technica sound quality is better. They know this, and they don't want you to find out in their store.
Want to check me on this? Take a pair of Audio Technica phones to an Apple store, where there's plenty of noise and Bose phones for sale. They don't restrict your ability to A/B against your own phones. The difference is obvious.
Pros Light, comfortable with great sound and still works after the batteries are dead.
Cons A little large for travel. The case could use a long, over-the-shoulder strap.
Summary I had Bose Quiet Comfort headphones, and while they were ergonomically great, the upper frequencies always sounded muddy. The QuietPoint headphones just sound better overall and at about a third of the price of the Bose, it's really a no-brainer. I would concede that the noise suppression works better with the Bose headphones, but it's merely a marginal improvement. The QuietPoints are quite effective at blocking out the airplane noises.