Just returned my AKG K340 to the shop. I would give them 6.5/10 points.
I have ordered the AKG K370 instead, they should arrive next week.
The AKG K340 were nice, especially if you listen to R'n'B or Mariah Carey. But once you go to more complex sound like live concert or orchestra the driver's can't give you any detailed sound.
Good thing is that they are superlight. Looks good and have a low profile. Very good voice timbre and bass. Definitely alot of sound for the money (I paid 84 USD).
But remember that despite the fact that the earplugs only weighs 3g without cable, the cable contains a big fat 4cm volume controller of ~10g (stupidity in the design department?). It kept yanking my earplugs out of my ear when I was out running. So definitely not something you use in the gym.
So if the sound is so good, why only 6.5 out of 10?
1) if you need something small, low profile and ultralight for running - no good cause of big volume controller.
2) If you need small, low profile while you commute on the subway - not really, because the sound isolation is almost non-existing. You can hear other people talk unless you max out the volume.
3) Small stylish good looking while you are out in the city walking - yes.