I listen to a wide variety of musical genres, but "home base" is '80s hard rock and heavy metal. With respect to current metal, I lean towards Euro power metal (Blind Guardian, Sabaton, Primal Fear, Helloween, Stratovarius, etc.).
I've owned all of the following at some point in the past:
Audeze LCD-2 pre-Fazor
Audeze LCD-X
Audeze Mobius
Fostex TH-X00 Mahogany
Hifiman HE-400i
Vokyl Erupt
Oppo PM-3
Monoprice M1060 v1 and v2
Monoprice m750
Sennheiser HD58X
Takstar HF-580 planar
Koss ESP-950 powered by Stax SRM-1/MK-2
Harmonicdyne Helios
Other than the Koss, they were all powered by a Marantz HD-DAC1 when at home or an LG V30 with Quad DAC using the high-impedence trick when mobile.
Of all of the above, IMO the LCD-X and the Fostex are probably the best for metal. Planars tend not to have the necessary impact most metalheads want.
I've settled into what I believe are my "endgame" equipment configurations after buying and selling far too much equipment. I tend to be a bit of a cheapskate, so I won't ever be dropping $2K+ on a set of cans.
My current headphones:
1. Mobile/wireless: Drop Panda THX. Superb sound quality for a wireless set of headphones. No noise cancellation, but I've never been a fan of what ANC does to sound signatures. Passive isolation is IMO preferable, and these isolate very well. The noise floor is nonexistent. Bass is ok, but not high-impact, so may not be suitable for metalheads.
2. In-home portable: Harmonicdyne Zeus. For $300-350, there are a great set of dynamics IMO. Very easy to drive and a decent amount of bass impact.
3. Dedicated listening rig: This won't be for everyone, but it has become my endgame... Gold Planar GL1200. Think poor-man's Raal-requisite SR1a at roughly 25% of the cost. Currently available from Drop at $1,199. Not portable by ANY stretch of the imagination, as it requires a bulky interface box (included) not to mention a dedicated speaker amp to power it. Traditional speaker amp-rolling for headphones is now a thing. I initially was powering them using a Denon AVR-2807 (HT receiver ca. 2006) at 110wpc. After some experimentation, I've now added a dedicated amp via the preamp outs from the Denon: a vintage Phase Linear 400, aka "Flame Linear". Made a HUGE difference opening up the soundstage and the extending the subbass. Ribbon drivers aren't necessarily known for their bass, but properly powered I'm finding that these go lower than any planar I have tried. Impact is quite good. I still wouldn't call them a "basshead" can, but the detail, imaging, and holographic feeling is stuperb.
It now has me keeping an eye out for vintage 2-channel amps to experiment with. I may have to try a tube amp at some point.
As with any audio opinion, YMMV.