Great job @deep_333 on the performance characteristics of the speaker required for metal. Also, nice suggestions by others and for @fthompson251 for going into detail on Legacy Audio. I am an authorized installer for Legacy and prior to becoming a dealer by trade, I owned Legacy Focus SE and Legacy Aeris speakers. They are higher up the line than what you might start at, but now having smaller Legacy speakers on my floor, I can attest that even the Legacy Studio HD can do a great job in filling a medium sized space and still deliver the clarity and speed for metal.
I’d be happy to discuss options on the Legacy line if you’d like. They deliver great price to performance ratio.
Another speaker line that I carry that would do a great job with metal is Perlisten. I just picked them up a few months ago, and they are very punchy, and very detailed.