What are the best speakers for 80's hard rock?

as the highs rolloff of these speakers makes merciful fate, sodom, bathory, slayer, hirax, satan jokers sound amazing, as if your a real metalhead,

You don't need to have a high frequency rolloff to enjoy these bands! What you need is a system that does not sound painful when you turn it up. That likely has a lot more to do with the electronics (due to distortion) than it does anything with the speaker.

One of my best friends (Earl Root, may he rest in peace, when introducing me to people in the metal scene would say 'he's not metal' and he was right- OTOH I introduced him to Steve Tibbetts and Popul Vuh; he introduced me to My Dying Bride, Skepticism, Earth, Therion, Opeth...) pretty much founded the metal scene here in the Twin Cities (google...). He was also a record collector and owned a record store. His system was anything but rolled off on the highs- it was very extended and natural (he ran Snell Acoustics model Bs driven by a set of tube monoblocks). The trick was of course to find the LP rather than the CD. A lot of metal kids shopped his store because he was the store in town that had the titles on LP. They preferred the LP because things like the cymbals sounded right when you cranked the volume. 

I get that as nobody wants speakers that "shine only with good recordings." You need speakers that cover up the faults in bad recordings making the recordings sound better, and also allow great recordings to sound great…perhaps a "shitty recording" filter built into your Magicos to allow you to indulge in badly recorded music, and the ability to switch the filter off for the good stuff…yeah…that's it! You should be able to listen to as much crappy stuff as you want without the pesky accuracy provided by great sound reproduction. Digital filters could do this with a Badly Recorded music setting…just remember to turn it off when you want to hear the good stuff as who knows what would happen if the Bad setting was left on….

OP-

for a more vintage sound- seek out Infinity Crescendo (CS) series.
A more modern loudspeaker- Thiel CS 2.4