Zakk Wylde is one of metal's all-time greats. The beloved shredder was recruited by Ozzy Osbourne in 1987, just in time to record 'No Rest for the Wicked.' Wylde is one of the world's fastest guitarists, able to cram a ridiculous amount of notes into one measure using the "chicken pickin" style. Wylde went on to front Black Label Society, having found success with eight studio albums recorded since 1999.

Sole Motley Crue guitarist Mick Mars has been rocking for well over 40 years, acting as Crue's one and only guitarist throughout the band's 32-year history. Mars' riffing a soloing skills added a razor sharp edge to Crue classics like 'Shout at the Devil,' 'Dr. Feelgood' and 'Kickstart My Heart.' Despite suffering from ankylosing spondylitis, Mars has persevered through the pain and deserves a massive amount of respect for both his past and present.

Zakk Wylde or Mick Mars? Cast your vote for the Greatest Metal Guitarist in the poll below! Voting for this round closes on Sunday, July 21 at 11:59PM ET. Fans can vote once per hour, so keep coming back to make sure that your favorite metal musician wins!