Pros: These really good and at least as good or better than my $99 Bose earbuds. Better sound quality and fit much better too. I would not have expected them to be this good from reading the reviews. If you listen to compressed music (mp3s) you don't need anything better than this.
Summary: To sum up, these are easily good enough as an entry-level pair of earphones. I can see how someone who has the funds to buy something better would go for a more sophisticated model, but I would happily pay Â£50 for these.
Pros: Excellent bass, very comfortable, very light, very cost-effective (Â£20).
Cons: If I were to be pedantic about it, the high frequencies are not as exceptional as the bass, the mid-range is occasionally lost in the bass.