I'm more of a fan of albums than bands but here's some of my favorites:

Behemoth
Death
Guns N' Roses
Immortal
Megadeth (old)
Sepultura (old)
Slayer (old)

Here's the albums I can't get enough of lately:

3 Inches of Blood - Fire Up the Blades
Behemoth - The Apostasy
Immolation - Shadows in the Light
Infernal War - Terrorfront
Iron Maiden - A Matter of Live and Death
Motorhead - Motorizer
Testament - The Formations of Damnation
Vader - Litany
Vader - The Art of War
Vader - Impressions in Blood

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