underrated:

Doug Boyle
Jon Schaffer
George Lynch
David Chastain
Mick Mars
the hellecasters guys
Vernon Reid
Dino Cazares
Nuno Bettencourt
Tom Morello
Keb mo

Overrated:

Malmsteen
Richie Sambora
Ace Frehley
The Edge
Randy Rhoads
Keith Richards
eric Clapton