One of the best in its class.

I really liked that these were more old-school Walkman size headphones than the big bulky over-the-ear cans. The sound is quite good even without the noise cancellation turned on, and very good with it on. My only complaints were that the Noisegard unit was large and external, like others have noted, and that you end up getting stuck with just too much wire. I also wished that these had folded to a smaller size for transportation. Last, I suppose it'd be nice to only have to use one AAA battery instead of two.

Overall however I am quite happy with these. Who knew music could actually sound good on a plane?