Noise-cancelling headphones recommendation


Can someone please recommend an "effective" noise cancelling headphones for less than $40 using for 14-hour trans-atlantic flight. I did a search on Amazon and read the reviews, but all the lower priced noise cancelling headphones reviews are mixed at best. Please share your experiences.
pt999
probably can get all you want by running a search and/or posting at head-fi.org. At that price range, though, I would doubt that you would get much.
The head-fi.org is a good resource. Wheen you do a search with them you will often find yourself on another retailer's web page. No problem; it just takes a lot of work to find what you want.
For the same reasons I ordered Bose, ($300) pair. they were nice but you cannot turn the noise cancelling option off, that after prolonged use gave me a headache. I returned them and went shopping. I found a pair of Sennheisen PXC 250, for $169. The Sennheiser have a PXC 150 that was $125 but the particular store was out, and I didn't have much time to look around. Well, I went to Europe and back, and I highly recommend this pair. For the movies and music they performed flawlessly. They are compact, easyly folded and have a on and off switch for "noise cancelling" which I found to be a nice feature.