Are you guys serious?? None of these are real metal bands.
Fuck commercialism. You won't find any of these band's CDs in a store.
Here are some oldschool underground bands:
Thrash Metal: Dark Angel/Nasty Savage
Prog Metal: Atheist/Watchtower/Spastic Ink/
Death Metal: Chakal/Infernal Death/Holocausto/Brutality/Master
Black Metal: SARCOFAGO (INRI is beastly)/Vlad Tepes
Fuck every other type.