I vote for the early to mid-90s period just for the great selection of black metal it produced. Some good death metal, too.
lolLate 60's, early 70's, early-mid 90's
for me the biggest years were ...80/81, 86/87, and probally 92 for the later years.
lol
1986 for me
dark angel- darkness descends
slayer- reign in blood
death- scream bloody gore
kreator- pleasure to kill (somewhat overrated, but still...)
metallica- master of puppets
nuclear assault- game over
slaughter- strappado