80's: Venom, Slayer, Possessed, Celtic Frost, Napalm Death, Repulsion, Anal Cunt, etc. were the best of the lot.
90's: Morbid Angel, Deicide, Cannibal Corpse, Carcass, etc. were best bands I heard or saw live that decade.
2000-10: Insect Warfare, Centurian, Prostitute Disfigurement, MeatShits, Anal Blast, Mesrine, etc. grindcore

Current:

Not sure who is putting out current Death Metal and Grindcore

Perfect metal albums IMO: Possessed "7 Churches;" Slayer "Hell Awaits & Reign in Blood;" Mesrine "Going to the Morgue;" Centoaph "Puked Genital Purlency;" Insect Warfare "World Extermination;" Terrorizer "World Downfall;" Morbid Angel "Alters of Maddness;" Deicide "S/T & Legion;" Cannibal Corpse "Tomb of the Mutilated & The Bleeding;"
Any of the above albums are true extreme metal classics and still kick ass :-) Any other Death Metal or Grind core fans have any to add? Anything current I should check out based on these tastes? I have been to some amazing fests and shows like Maryland Deathfest, and LA Murderfest and stumbled on some of the more obscure bands listed, need to find new killer metal....