all Death albums are great. My favourtite is 'Individual Thought Patterns'. It has the best songwriting. But Leprosy is very awesome too. The Sound of Perseverance is maybe the most progressive album besides Human.
Can't go wrong with any album
Final Depravity - Veil of Secrecy (feat. Angelripper)
I'll give it another listen through, 3 people can't be completely wrong ^^. It just hasn't made as much of a impression on my as Leprosy did, even though I've listen to SoP about twice as much.