Interesting. I've only really been "into" this hobby for a few years, hard to imagine Sennheiser doing a poor job of anything...easier to see with HFM. I suppose the old-style HFM stuff does look a little "agricultural" and they certainly aren't the last word (possible not even the first) in build quality...but it does seem like sound-wise, they have a strong following. I am a bit surprised that they killed the HE-6, seeing how many like it. I know the cynics will say "But how can they sell an HEK, HEX, Susvara with the HE6 hanging around at $1200" - but I don't know if it's at all reasonable to assume that even a significant percentage of HE6 owners would pop for the Susvara, seeing as that's sort of the true successor to the 6. That aligns w/what I've heard re: the revised Audeze cans too, I imagine the diaphragm makes a far stronger difference than waveguides on the magnets. Will be interesting to see how the 2c diaphragm compares to the 2r2 diaphragm and the 2f diaphragm...although I doubt anyone's going to tear one apart for science.