Speed: yngwie
Technicality/Craziness: nuno bettencourt
Songwriting: paul gilbert (racer x)
Originality: Steve Vai
Heavyness: Zakk Wylde
Slide: Duane Alman
Blues: chuck berry
Overall Best Guitarist: nuno bettencourt
I noticed no one mentioned nuno bettencourt. personally i find him to be a damn good guitarist.