I bought a pair on the weekend ($399 discounted to $389 at JB Hifi and will claim back another 10% when I head off to Canada next ween) to replace my well worn Audio Technica noise cancelling headphones. I used them for a flight from Perth to Melbourne on Monday. Very happy overall, noise cancelling is excellent, sound quality is acceptable for what they are, and the small case is nice.
My only complaint, is there isn't a dedicated spot on the case for the cable, so I'm finding I leave it connected at the headphone end and just coil it up, but I'm not sure if this is the best thing for the cable.