I have recently broke my set of these, and have finally got around to buying some new headphones. There was no doubt in my mind that i would get another pair.
These are the best headphones i have ever used(which includes some rather more expensive sets). As soon as i put my first pair on, i could simply tell the quality, no outside noise, no distortion, except when on full volume, but that is extremely loud, i normally find half volume loud with these and once they are 'broken in' (been used for a day or two), the quality of sound just gets better.
I have never heard bass anywhere near as good as these in any other in-ear headphone.
So basically, if you are looking for a good set of headphones, get these, i strongly recommend it, and now only £30. Maybe the best deal i have ever found on anything...