Originally Posted by Rare

There have been several threads covering some of these, for example:

http://www.flyertalk.com/forum/trave...sh-pxc550.html
http://www.flyertalk.com/forum/trave...es-planes.html
http://www.flyertalk.com/forum/trave...hargeable.html
http://www.flyertalk.com/forum/trave...-mdr1000x.html
http://www.flyertalk.com/forum/trave...headphone.html

I bought the Sony MDR-1000X and really like them. I've only used them with a Bluetooth connection, but I believe they can be connected with a wire as well. To my ears, they have good noise cancellation and very good sound quality. One feature I've really come to appreciate is "Ambient Sound: Voice", where it will cancel out some frequencies but let the voice frequencies through. When I'm having a conversation with a seatmate or exchange with a flight attendant, I can hear them better with the headphones on than without them. I think they are comfortable, but the longest flight I've taken with them so far is about 6 hours. They fold into an included carrying case.