Bose QuietComfort® 3 Wireless Headphones

Even though the quiet comfort 3 is expensive they really are worth it especially if you travel. You can don't even have to listen to music as they cancel noise all the time if switched on so you can just use them for silence if you wanted.
The sound quality is something to behold, if you are an in-ear fan and have never used on or over ear headphones you will be blown away. The depth and clarity is just mind blowing from such small speakers and to top that they are incredibly comfortable to wear for long periods. the battery lasts 20 hours and when it runs out you switch to teh back up, brillant.