back in the eighties, I actually worshiped Vivian Campbell. To me he was the Guitar God. He didn't have Yngwie chops, but he had something...a real snazzy style that fit the song. Outside of
Def Leppard he does blues stuff now, and plays
Les Pauls. I saw him a few years ago with Def Leppard, but Phil Collen did most of the solos. Vivian got a couple, but they were short, slow bluesy things. Nothing like what he did in Dio. He's got a blues CD out now, but I can't remember what the name of it is. He sings on it too. Never really got into DeMartini's stuff though.