now this is a list!very nice !!i agree with all of the above. and would like to add- jimmy page, jack white, george thoroughgood, dimebag darrell,hendrix ,b.b.king,dickie betts,the nuge-ted nuggent,dave mustaine,keith richards,mick marrs,jerry garcia,carlito[carlos] santana,angus young,john mayer,kirk hammet,johnny lang,randy rhoades,zakk wylde,eddie van halen, willie nelson,[spelled wrong- tommy iommy ],steve miller, the dude from rush, and countless others.
I sincerely mean no disrespect... No toss necessary. Alex is great! As are many listed. Many of those listed are some of my top favorites. I cut my teeth of playing chops in the '80s on these players including Jimi. Jimi is alone at the top. A music appreciation friend asked me once who,in my opinion, was the cream of the crop guitarist.... I answered his question with a question. Electric? Or acoustic?For OP(years ago) I can't believe you named Clapton, Jimi made him pee on his tail and unplug his guitar and leave the stage when Jimi was a nobody.
My votes to this day are a toss up between Hendrix and Lifeson.