Voting for Master. Always felt it was the heaviest of all Metallica albums
where's black :D
Black is called very strange: Metallica
All albums, besides St. Anger..
Blackened, Creeping Death and Battery
Master of Puppets !!
In my opinion the songs Master of puppets and Creeping death are the bests songs of metallica ;)
Then I would go for Master of Puppets.\m/