Summary: I purchased these to use on flights to New Zealand (26 hours each way). I was a little sceptical at first and when I tried these out at home even more so, however once we were in the air they were great. The isolation from the ear bud was really good and then when enabling the noise cancellation, you could hardly hear the roar of the engines! Made the journeys much more bearable - well worth it.
Summary: Don't be put off by the bad reviews, if you are looking for a pair of good quality noise cancelling earphones then you can't go wrong with these. I found the the noise cancellation very effective on a recent long haul flight, in fact the drawback was that I started to notice the engine noise even more when I took them off, and the sound quality is very good.
Summary: Not cheap - although now down in price from what I paid by about 25% - but I would say that anyone who suggests that they fail to deliver does not understand their purpose. By combining a degree of sound isolation with electronically inhibited low frequencies they certainly worked for me on two Trans-Atlantic flights, hearing the degree of fade of the engine noise when the cancellation was switched on was very reassuring. For the price - full marks.
Summary: I bought these for the missus for Christmas after she expressed an interest in some much more expensive ones (250 quid-ish, she's a lady of expensive tastes) I'll be honest I wasn't sure how effective they'd be but she tells me they work really well and she no-longer has to put up with mindless chatter and train noises interrupting her music on her journey into work in the morning.
Summary: I have a pair of very expensive noise cancelling headphones that are great but they are too big to carry on short trips. I have therefore purchsed these as an additional set of headphones for thos short trips. They work really well conidering I have paid £20 ish rather than £220. The noise cancelling work well and just in case they are not comfortable they come with 2 additional earplugs smaller and bigger just in case.
Summary: Good for long plane flights, particularly if you want to watch a movie at reasonable volume. Choice of 3 earbud sizes so should fit most people. Not sure why the connecting wires have to be quite so long.
Summary: I purchased these for use when travelling and although I haven't actually flown since the purchase I've had the opportunity to test them in a number of different environments. They fit nicely into my ears, I hate the ordinary round buds that never quite sit properly, but these do once you select the right pad.