Does anyone here have experience with Ultrasone's offerings compared to the K812s? I am interested in the AKGs but would like some opinions on their treble performance, eg high violins, flutes etc. Almost all the Ultrasones I have tried (with the exception of the Signature Pros which I found excellent) had horrible, steely highs. Having skimmed this thread and others, there are many who praise the K812's soundstage and richness, but others who dislike their treble performance. My reference headphones are the Sennheiser HD800 and Beyerdynamic T1 2nd generation. I prefer brightish/neutral headphones with very natural reproduction of instrumental tonality plus good sound stage. I am completely unfamiliar with AKGs offerings, so I wondered whether they had any sort of "house sound" or weaknesses (like Ultrasone's nasty highs?). I note that prices have come down in Europe compared with when they first came out.