Joe Satriani - Probably the best overall guitarist in the category of instrumental rock. Incredible tone and intonation. Always has a great rock rhythm, singing melodies and soaring solos. He goes above and beyond to add technicolor to his sound through high "squeals" and heavy use of wah. CLICK FOR VIDEO.
Andy Timmons - Probably one of the best overall players having fused more styles than any other guitarist. Very comfortable playing rock, jazz, country, blues, you name it. CLICK FOR VIDEO.
Eddie Van Halen - Pioneer in fretboard tapping. Probably the best guitarist in a rock band setting. Unmistakable tone. He changed the face of guitar with some of the flat-out fastest riffs in rock in the "Eruption" Solo. CLICK FOR VIDEO.
Neal Schon - Probably the most melodic of all rock guitarists. His melodies are heart felt and emotional. His leads, presented in Journey songs, are known for their singable lines that go on until they crescendo into a blistering climax. CLICK FOR VIDEO.
More names...
Steve Vai
Eric Johnson
Jason Macedo
Shawn Lane
Jeff Beck
Steve Howe
Brian May
Steve Morse
Alex Lifeson
Randy Rhodes
Marty Friedman
Steve Luthaker
The Edge
Vinnie Moore
Tony MacAlpine