It all depends what you like: I love extreme Testament, so I'm a huge fan of Demonic. Chuck uses the death metal voice the whole time, but the music is so fucking heavy it sounds like its going to explode out your speakers. I think it's underrated, but again I can see why its hard for people to like. Souls of Black is pretty good, it reminds me a lot of the New Order instead of Practice What You Preach. It's just got lousy production. The Gathering is a masterpiece. It's like Reign In Blood, but better! They all give the performance of a lifetime, especially Chuck, Eric and Dave Lombardo.