I received my pair yesterday and my verdict is VERY positive.
These sounds like you might as well have speakers far away from you. There is no concept of feeling like sounds comes from your head because the soundstage is this wide and big. The treble response is IMPRESSIVE, lots of bright ost hits me much harder on these than say the 58x.
I was using a pair of koss 95x before and I feel these are better in a lot of ways because they have a bigger scale of soundstage, but they also have p good bass response which is something the 95x lacked. Because of this big soundstage, separation is good, but the imaging is also impressively good at this size.
The 58x still sounds different enough for me to try either depending on the situation, but these are my new mains, I love it 