I bought myself a pair of Pilot ANR's (the black ones). I really like them, the battery is in the ear piece, they are light weight, great noise cancelling, very comfortable. I would stay away from DC becuase I heard the are very unreliable and the cord is about 10 feet which is far too much for a GA aircraft, and it has a power pack right in the middle, I can imagine tripping on that when trying to get out in an emergency!
Iain