Pregunta dificil la tuya, estos son mis temas favoritos y de seguro se me debe estar
escapando mas de uno:

-into the lungs of hell- (so far so good... so what!)
-peace sells -(peace sells)
-killing is my business and my busines is good- (killing is my business)-
-hook in mouth-(so far so good ...so what!)
-holy wars -(rust in peace)
-hangar 18-(rust in peace)
-five magics-(rust in peace)
-skin oh my teeth-(countdown to extinction)
-symphony of destruction-(countdown to extinction)
-high speed dirt-(countdown to extinction)
-sweating bullets-(countdown to extinction)
-countdown to extinction-(countdown to extinction)
-this was my life-(countdown to extinction)
-foreclosure of a dream-(countdown to extinction)
-captive honour-(countdown to extinction)
-angry again- (hidden treasures)
-99 ways to die- (hidden treasures)
-trust- (cryptic writtings)
-she wolf-(cryptic writtings)
-the disintegrators-(cryptic writtings)
-dread and the fugitive mind- (the world needs a hero)
- the killing road-(youthanasia)
-reckoning day-(youthanasia)
-a tout le monde-(youthanasia)
-kill the king-(the world needs a hero)
-black swan (thirteen)
-dialectic chaos- (endgame)
-44 minutes- (endgame)
- headcrusher- (endgame)
-of mice and men-(the system has failed)
- disconnect-(the world needs a hero)

No digo que sean los mejores; son los que más me gustan a mí.
Espero te sirva de algo, saludos!

todas son geniales pero te recomiendo:

speed metal:
-head crusher
-holy wars
-tornado of souls
-poison was the cure
-polaris
-loved to the dead
-ratlehead
-mechanix
-sudden deat
-the conjuring
-bad omen
-this day we fight

Metal con sentido:
-back in the day(te hara sentir orgulloso de tu musica)
-symphony of destruction
-holy wars
-peace sells
-hook in mouth
-foreclousure of a dream
-liar(jaja)
-something im not
-black friday
-a tout le monde
-in my darkest hour

Covers
-anarchy in the U.K.
-paranoid
-schools out
-no more mr. nice guy
-out on the tiles
-its electric

Tranquilas:
-Time
-promises
-trust
-the hardest part of letting go... sealed with a kiss
-she wolf

tengo tres...
peace sells
hangar 18
simphony of destruction