I really like these headphones and would definitely buy again.
The cord is slightly thicker than Sennheiser or other makes of headphones, which means its far harder to get them tangled and its far harder wearing.
The sound quality is brilliant. The bass booms enough to enjoy Black Eyed Peas but not overpowering enough that you do not appreciate the classic music or podcasts. The volume levels are good and I can happily have Ace of Spades at full volume without train passengers around me hearing.
The ear buds are tight in the ear. Personally I like this as it blocks out all other sound (which can be a little dangerous crossing the road!) however you may want to keep your ear buds from your last set of in ear headphones in case you do not like it.
In summary, I have gone through around 15 pairs of headphones in the last ten years. These are the best for a mile and have lasted beyond any other Sennheiser or Sony headphones I have bought before. Definitely worth paying a little more money to get these for a lot better sound and hopefully a set of headphones that last longer than a year.