I just got it and compared them with my ie80.
In terms of clarity and dynamics it certainly is better, but it's high and bass are pretty bad. The bass is not enough and the high is too harsh! I don't mind the bass but the high is driving me crazy. I cannot wear them for more then 3 minutes. Whenever some metal instrument comes it's like a needle in my ear.
Clarification: I just got them used and haven't remolded them yet. I tried to get it into my ears as deep as possible to avoid sound leakage. Anyway, do you think it's because of fitness that the high is so bad?