I've bought these as what I was hoping would be a direct upgrade for my Beyerdynamic DT 700 Pro X.
It was an upgrade sonically and in terms of the accessories that you get, but a step back in terms of material quality and design. The edges of the metallic part connecting the earcups to the headband are sharp and of a lower quality than the DT 700 PRO X. The headband itself has more padding, but the part where it connects with the metallic bit is formed of two plastic sections with a seam in the middle. Because the metal is not rounded, as the earcups move, the metal can get stuck in that seam and will make a loud popping noise when finally dislodged. The plastic of the earcups themselves also feels cheaper.
I love the braided cable, though. It would be a great cable if it wasn't so microphonic (as all the Beyerdynamic cables, really). I can't stress HIGHLY microphonic enough. There's a fan behind me that's turned on during the summer and if I don't play anything I can hear the vibrations of the moving air touching the cable. That's crazy.
Anyway, this is a headphone that was originally 600€ and it fails to keep up with its 250€ little brother in some aspects and that's extremely disappointing. If you don't care about the material fit and finish and just want a well-sounding headphone, then it might be for you, but if you care about the whole package, then I urge you to look elsewhere.