Symbolic's sexy groove 'Sacred Serenity' definitely scores it ahead of the bunch in my opinion. The Sound of Perseverance and Individual Thought Patterns have to tie for second for me. A very difficult poll might I add.
Leprosy was the best balance of technicality/brutality and still not too preachy lyrics ... both of which i think were a bit much in later Death, as much as I loved all their releases.
Leprosy. Not much to discuss really. Everything I heard from those guys pretty much kicked ass. Except Sound of Perseverance failed to impress me back then, I certainly should/will revisit.