Edit 2: Received another set under warranty (need to pay for delivery to US), this next set then also gave up after about 4 months, same problem, but this time the left ear stopped working. Am now expecting the 2nd warranty set sometime soon. I guess if you are prepared to mess about with warranty replacements every few months...
Edit 25th June 2010: Now not working. Sound not coming out from right ear bud. Great :(
Don't seem to be able to adjust rating, would downgrade.
have had these for 2 months now and like them a lot. Gives strong bass, so much so that if you got the same bass from big speakers you'd feel it through your whole body. I much prefer bass-heavy sound compared with headphones with a lack of bass, to balance it out I've used my iPhone's equaliser to thin the bass out a bit.
Calls with my iPhone 3G are clear, no one has commented about any problems with my voice at their end, so all good. The click mic works well, although the button is quite small. The button can also be used to control iTunes music: 1-click to stop/start, 2-clicks to skip to the next track, 3-clicks to skip backwards.
Quality seems good so far, though I'm a bit worried by other reviewers who seem to have had problems.
Overall a good mid-range purchase.