Seems like Audio Technica is releasing an update model to their ATH-ANC7 called ATH-ANC7b. Audio Technica said the improvements made to the model include new electronics (not sure if they meant drivers, noise canceling or both), redesigned earcups for better comfort, the battery is easily accessible, and the package now has long and short cables. It should be available by August for the retail price of $220.

New ATH-ANC7b QuietPoint headphones

I have never actually heard a noise canceling headphone but intend to get one for traveling before the end of next semester. I remember the denon coming out but don't recall hearing any positive reviews. Hopefully this will be different.

I agree with the school of thought that noise canceling phones are terrible value for money.

Bulky for traveling, require batteries, do not block transient noises like kids screaming, deliberately introduce distortion into the sound, and you are paying a decent wad of cash for the noise canceling circuitry rather than the headphone drivers.

Canalphones on the other hand are very compact, do not require batteries, isolate all sounds without changing the sound, and more of the money you spend goes towards the drivers.