I have only used these for a couple of hours so far, but the sound quality seems amazing considering these only cost about €40-50. (On a blind test, maybe I would say these cost €100-150.) Overall, the sound seems quite "balanced" - in the sense, that there's nothing initially annoying about it. Bass is strong and clear, while higher frequencies deliver much detail.
The wire length is about 120cm, which is quite appropriate for my use.