I voted for Slayer. Favorite songs: Hell Awaits, At Dawn They Sleep, Praise of Death, Angel of Death, Jesus Saves, Criminally Insane, Epidemic, Postmortem, RainingBlood, Blood Red, Spirit in Black, Expendable Youth, Dead Skin Mask, Skeletons of Society, Seasons in the Abyss. I have mny other favorites, but those are the ones I particularly like from Hell Awaits, Reign in Blood, and Seasons in the Abyss.
I felt like this list was a little lacking though.
Where's the Pantera?
Where's the Death?
Where's the Sepultura? Sepultura+Max Cavalera= my personal all time favorite metal band \m/ \m/