What are the heaviest heavy metals?

Answer 1

Probably some of the newer kinds, like Deathcore or Grindcore, that's because the more technologically advanced we get, the heavier sounds we can get, back in the late 60s and early 70s, Black Sabbath and Judas Priest were the heaviest things around, and nowadays we don't think they're that heavy. Maybe it seems impossible by now, but 10 years from now, we may be able to create heavier sounds.