The Mackies,or other good PA Speaker and Some Powered subs will get you to Metal Heaven.Get a pair that are not carpet covered and they don't look to bad ..unless the carpet covering doesn't bother you.heck,you could probably rent something from Guitar Center and test drive them..you'll have to make/buy the needed adapters to go from your amp to the speakers but then you will know how they work for you in your setup for not to much money.
What is the best HEAVY METAL speaker?
I know totally blasphemy question here on Audiogon. But you like what you like, right? Anyway, I know most metal music is totally compressed and recorded horrible (aka Metallica) however there is a new age of metal bands out there that are starting to change that (Opeth started with Blackwater Park). So what speakers out there can take the pounding of a double bass drum kit hitting at full throttle and give the roar of metal guitar justice. There has to be a set up that would make Glen Tipton turn his head and say hell ya!