These in-ear monitors are good enough in comparison to others in the same price bracket.However I found them to be quite high maintenance. The buds are very difficult to get of to clean and if you get even a small amount of ear wax in the small holes you lose all volume! I thought that one of the ear pieces had a fault for a while as I was only getting sound in my right ear (this happened mid set btw) I was playing around with my mixing desk wondering why I wasn't getting any sound from left ear. The next day I had a look and decided to give the buds a clean. TADAA! sound in both ears returns. That being said, if I make sure I clean my ears out before using them this is not a problem. The other thing is that I have quite small ear holes (kennels or whatever they are called) so the standard sized bud are actually quite painful to wear. I changed for the smaller ones which are a slight improvement but do have a tendency of falling out.
I have only used these for a couple of hours so far, but the sound quality seems amazing considering these only cost about EUR40-50. (On a blind test, maybe I would say these cost EUR100-150.) 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.