Finally, I am, after a long search, met with the Sennheiser IE 80.
Have you ordered and have to say I'm thrilled!
The difference from the Aureol Fidelity is striking. So a crystal clear sound, rich bass and so such a good isolation from ambient noise, really fantastic.
The headphones sit by their special shape really great in the outer ear, the bass can via two small screws (on each earpiece a) be set as desired using the included accessories and you can tell the difference clear.
Packaging makes real head turner, generally affects all very valuable. The accessories is extensive, many different attachments, mounting bracket and a nice storage box.
Strong buy recommendation!