Summary: Great sound, worked well on long flight, but the plastic is very brittle. Very well taken care of but the area around the earpiece requires some reengineering. Nice and portable, cut out 90% of flight engine noise. Will try another brand with hinges that allow the headphones to fold.
Summary: The sound, and especially the noise cancelling, amazes me every time I use the headphones...and that's pretty much every day. The "white noise" at the office completely disappears and I can actually turn the volume way down on the music - better for my ears. :) I find the headphones very comfortable and I can wear them for hours - something I've never been able to say about other on-the-ear headphones (I have a big head - literally!).
Summary: The sound was fine. I have no problems with the audio abilities. They fold up small and would be good for travel. If they were just standard headphones, I would be happy with them. The problem I have is the sound cancelling doesn't seem to make much of a difference at all. I tested them against the range fan, vacuum cleaner, fridge fan and I even played a sound effect of a jet interior wondering if they were tuned to that specific frequency.