I can only speak for the DT880s, the only ones that I have/tried. My experience with metal is limited but I do listen to rock and rock is good on the 880s, especially blues-y /jazz kind of rock like Black Keys. I tried listening to some metal on Spotify and it's pretty iffy for me. Some were good, some not so. It depended on the recording. An example would be Metallia self-titled album, for all those tracks, the mids were waaaaay recessed and sounded bad but Loaded was good. The mastering really makes a diff with the 880s. Hope you found this semi-useful. good luck with the search!
Just wondering if you draw any conclusions about the accuracy of the DT880 from that?