Ive had these for around 2 months now. these earphones are relatively new. these earphones arnt as bassy as lets say... the ep-630s but the sound on these earphones are much richer, nice high, nice mids, unlike some other earphones which has just nice bass and complete rubbish highs and lows.
i listen to dance, rock, metal, so the higher frequencies mean alot to me.
these earphones are designed pretty well, it comes with 3 different size buds, the middle ones fit me exactly and completely blocks out external sound. the cable is rubber based, not the slippery smooth ones, which are pretty good. the plugs is nicely designed too, covered in rubber which imo, doesnt break easily. plugs gold plated too.
the earphone itself is partially rubber, partially plastic and partially metal. its pretty hard to describe in words, but trust me, these are nicely designed, even putting them in your ear is comfortable because of the triangular grips.
these are awesome earphones and they dont brake easiy. excellent built quality, excellent sound for £9.99! (i got mine for 12.99 - wished i got them now instead :()
heres a little comparison thingy:
Logitech Z-2300 = Creative EP-630 --- loud, lots of bass
AE Aego M 2.1 = Creative EP-830 --- not as loud, but sound just sounds soooo much better
main difference is that they fit in your ear ;)