I've been away from the headphone game for a few years now and I'm yearning to have a full sized open can again. Both the 58X and 6XX seem like amazing value options, so I'm trying to decide which one is best for me (And I've wanted to try the Senn 600 series for a long time now!).
The last headphone I had was a DT 880 600 Ohm Premium. It was a great headphone, I loved its clarity and speed, as well as the comfort and user serviceability. I used it for about two and a half years but I grew dissatisfied with it in the long run due to the somewhat thinner and drier sound it had. I'd also say that it was a tad bit too bright and could've used a tad bit more bass. My bread and butter with music is Metal (Thrash, Black, Death, Industrial, a bit of Doom and Groove) and Electronic (IDM, Ambient, Downtempo, Trip Hop, DnB) and I also enjoy a handful of other miscellaneous stuff on the side; such as folk, rock, punk, jazz, hip hop and OSTs.
From what I've heard about them and the measurements I've seen, I'm currently leaning towards the 58X. For Electronic music I think the extra subbass it has would be greatly appreciated (and subbass is just a precious resource in general with open dynamics) and I've seen it described as a slightly more exciting listen than the 650/6XX which would probably be good for metal. FWIW I'd be driving them with a NFB15.32 and they would also do the occassional bit of gaming and movie duty.
Any insight would be greatly appreciated. Thanks!