Black Sabbath.
They arent known as the grandfathers of Heavy Metal for nothing.Both Dio and Gillan were better vocalists than Ozzy,but just like there is no Van Halen without Dave,just like there is no Guns n Roses without Slash..there is no Black Sabbath without Ozzy Osbourne.They would have been so much better had it not been for Ozzy's drug problem and the low years the band saw after Ozzy's departure.What he brought to the band was pure showmanship.Yeah Heaven n Hell is a neat album..but War Pigs,Iron Man,The Wizard,Paranoid,Sabbra Caddabra,Sweet Leaf,SnowBlind...THIS is Black Fucking Sabbath.
And i refuse to let this thread die.