http://www.thetravelinsider.info/roadwarriorcontent/noisecancellingheadphonesindex.htm
Found this article for you, it gives reviews on some of the noise cancelling headphones but some reviews could be a little bit old. However, it may point you in another direction of a brand you had not considered.
I have some Sennheiser noise isolating headphones obviously not the same as cancelling ones but the quality of the sound is good. This company may make some good noise cancelling ones. As you probably know people post reviews on
Amazon which will give you a better indication on how good the headphones are. Ideally cutting out that dreadful airplane drone would be ideal.
Please let me know if you try any. I will have a look through my old copies of Stuff magazine, they regularly look at headphones. I know The Gadget Show did a test on noise cancelling headphones (not in this current series) but they may have archives if you look on their site. Just nipped across to Stuff
http://stuff.tv/search/noise+cancelling+head+phones/default.aspx more reading for you.