I'm a metal maniac from way back. I've blown a few rail fuses in various amps. A tube rectifier in a couple.
I've had several full range speakers that sounded great with metal. Thiel, Soundwave by Vero Research, vintage Electrovoice 12TRXB,etc.
One speaker that really impressed me with heavy music was Paradigm Studio Reference 100's. They go plenty deep, easy to drive and look like they mean business.
I know many look down on Paradigm, but I don't.
I'd check out the modern, upper Paradigm line.
Since retirement, I'm now an apartment dweller. I've also had to retire my big full rangers.
Now my Grado Allesandro MS-2's do metal exceptionally well, and my tube can amp doesn't have a fuse.