The New Wave of British Heavy Metal: "After Sabbath," (Judas Priest, Motorhead, Iron Maiden, Venom)

Quinn looks at what came after Black Sabbath in the early to mid 80's; the NWOBHM and others asking "Who is the true successor to the legacy of Heavy Metal that Sabbath gave birth to in 1970?" Judas Priest, Motorhead, Iron Maiden, or Venom?