I remember reading that 'Top of the World' was recorded with an old Gibson Korina Flying Vee and the Marshall Plexi head. With regards to the amps, I had an SLO 100 till it died, and am using a mk2 5150. Neither sound like EVH (not in my hands anyway) It depends on how you play 'em as to how they sound, more so than choice of guitars/pickups, etc. Obvously pickups and stuff will fine tune your sound, but the bulk of it comes from how you dig in. You know what I mean? Buy a new amp, a few days later when the novelty's wore off, it still sounds like you. I have wasted a LOT of money learning this..lol. My opinion of course....... :D