Great choices. I know 2 albums you didn't mention that would be on my list would be Winds of Creation by Decapitated and the Swedish death metal classic, Left Hand Path by Entombed.
Great choice on the number one. Some other greats: Malevolent Creation - The Ten Commandments Unleashed - Where No Life Dwells Incubus (The real one) - Serpent Temptation Grave - Into The Grave Cancer - To The Gory End Entombed - Left Hand Path Massacre - From Beyond Carnage - Dark Recollections Autopsy - Severed Survival Possessed - Seven Churches (I included this here because they gave us the track "Death Metal")