Mayhem just for the fuck of it (don't even like the album the slightest and there are some passages in SOAM I kinda dig. But hey... overall I couldn't care less about these two albums)
Vol 4 is a monster of a classic and my 3rd favorite Sabbath album. But to be fair I think The Chemical Wedding is a bit better. It wouldn't pass if it was Sabbath Bloody Sabbath. Paranoid would be a tough matchup. Nevertheless, Bruce Dickinson wins this one.
As I stated before several times Firepower is one hell of an album but... Sabbath Bloody Sabbath? Fucking Sabbath Bloody Sabbath? The title track is simply put my favorite Sabbath song followed by the masterpiece that is A National Acrobat. Then there's Killing Yourself To Live, Looking For Today and the superb Spiral Architect. When your "worst" song is probably Sabbra Cadabbra you know how high the standards are. There are only two Priest records that are on the same echelon than this masterpiece, and neither of them is Firepower no matter how good it is. Black Sabbath.
Well... although not being my favorite this is Brazil's thrashing behemoths breakthrough album that left the metal community worldwide with their jaws at their feet. Brave New World versus Beneath The Remains, Innerself, Slaves Of Pain, Mass Hypnosis? Yeah right. Sepultura, PORRA!