For the past month I've been trying various different headphones which I can use on a daily basis. I have tried the Bose QuietComfort 15 (QC15) and both B&W P3 and P5 headphones which all cost between £250 - £280. I've also got a pair of Sennheiser HD280 Pro headphones in addition to some old Sony MDR-V300 and Sennheiser Noise Isolation earphones. I can honestly say that the quality of these Sony MDR-V55 headphones is just brilliant and for me these are the best headphones of the lot. They fold easily into my laptop bag, fit very comfortably (much more so than the Sennheiser HD280 headphones) as they're not too tight and the sound quality is just spot on. After trying the B&W P5 headphones, which do sound 'very nice' but for me they didn't isolate the outside noise very much and just cost a fortune. The Bose QC15's were amazing at noise cancellation (only low frequencies, high pitched noised won't cancel out), so great for airplane travel, but I just couldn't see how the quality was any better than my Sennheiser earphones.
These Sony headphones are very stylish yet comfortable, and have a great feel to the sound across all frequencies. The bass is better than the B&W headphones whilst the mid to top frequencies are crystal clear. I use these for both music and listening to my language tuition when traveling on the train, sitting in the garden, etc. They're the perfect solution for that.
The only thing I wish it had was a case to keep it in, and a better way of wrapping up the lead. Other than that, for the price you really can't go wrong and I for one have saved hundreds of pounds compared to the other makes.