Got them.... Their highs and mids take a big dump on my 80ohm dt770 and ath m50x. As i said before this are not my usual cup of tea since i usually prefer closed v ahaped can (hd25, m50x, momentum, bla bla bla) but its impossible to deny that the highs and mids are clearly superior to the other 2. M50x is better for faster rock and edm of course, but when listening to stuff like keane, coldplay, travis, even arctic monkeys, they sound definitly superior because the soundstage is much better (specially against the m50xs, against the beyers not so much) and mostly because vocals and accoustic guitars pop out much more than on my other 2 headphones.
Heres 2 photos of them....
I have one question though.... Does the housing on the hd598 release a bit of cracking sounds every now & then...? While using them i get a ocasional pop crack but its something that is super low anda random.... Even my m50xs housing makes some cracking noises while using them so i suppose this is normal right?