There have been many great guitarists since the 50's, but not that many are as good as the one's from the 90's. Most bands don't care but some do. Who in your opinion is the greatest guitarist of the 21st Century?
This question is VERY easy for me when I say Synyster Gates. No other guitarist right now can do what he does (or even wants to do it). Long live Gates
modern: daron malakian, fredrik thordendahl (from meshuggah), scott kelly
older: too many....yngwie, randy rhoads, jimmie page, ritchie blackmore, tony iommi, kirk hammet, kerry king, james hetfield, alvin lee, carlos santana (check out his gig at woodstock 1969!), jimi hendrix...and kurt cobain for style, riffs and sound