sbiddle: Best headphones on a plane are noise cancelling headphones - good noise cancelling headphones.
99% of what Bose make are crap, but Bose QC15's set the benchmark when flying.
I'd personally say that the M14 and M10 BlackBox (Phitek) walk all over them and are half the price to boot. Not to mention that they replaced my 6 year old M14's with a brand new M10 when they had a crack in the plastic, I didn't even have to ask.