Cannot understand why people like AKG3003. I have listened to an enormous range of classical music on mine for the last month hoping I will get used to them. They simply sound tinny and awful compared to HD800. Bit above all they hurt my ears where they seem to rub my ear raw I think they are much wider than the pother IEMS I have worn Shure and Sony. As to the sound quality I think it sounds most unnatural and not neutral at all. I have given up on them as a bad investment and AKG did not bother to respond when I asked them what I could do about the fit so they obviously don't care about customers.
that's a shame man coz mine sound fantastic tho i don't listen to classical. and i got no problems with fit. sounds like they're not for you.