For me its-
Guitar- Randy Rhodes (Ozzy Osbourne)
Zakk Wylde (Ozzy Osbourne, Black Label Society)
David Gilmour (Pink Floyd)
Jimmy Page (Led Zeppelin)
Bass- Cliff Burton (Metallica)
Robert Trujillo (Metallica, Suicidal Tendencies, Black Label Society, Ozzy Osbourne)
Drums- Lars Ulrich (Metallica)
Neil Peart (Rush)
Bonzo (Led Zeppelin)