True, but he studied music so the notes aren't random. But they do sound weird in that instead of using keys like most musicians do now, he still uses modes like E aeolian and dorian and phrygian and all that that was used until about the 1400's. He can just shred like no other i see. Although...
Gotta be Jimmy Page first. Then i gotta say a mix of Chris Story for All Shall Perish (his riffs are awe inspiring), michael angelo batio, and kirk hammett (who can listen to master of puppets and not love him?). Those are the best guitarists in my opinion.