Tom Morello's second favourite metal album of all time is your seventh. It's certainly difficult to argue with tunes the size of Hells Bells and the amazing title track, which was voted number six in our Top 50 Guitar Riffs Of All Time.

Morello: “I never get tired of this album. I don’t see how anybody who likes hard-hitting rock ever could.”

Your votes:

"Such a difficult question. Master Of Puppets, Number Of The Beast, Reign In Blood, Back In Black. Cowboys From Hell. No Sleep ‘Till Hammersmith. But really - Physical Graffiti?" (From Johannes via Facebook, thanks)

“There can be only one truly kick-ass heavy metal record: Back in Black - AC/DC.” (Thanks, thedude5)

“A close contender for the throne, as it contains two of the greatest metal songs of all time, Hell’s Bells and the title track.” (Thanks Tom Morello, via his 13 greatest heavy metal albums of all time)