Eddie Van Halen
Love him! Has the best lead style I've ever heard, totally exciting, unpredictable and flamboyant which I much prefer to endless scale runs. Also love the way he intertwines his lead and rhythm into 1 track omst of the time.. the man is a genious! One more word which must be mentioned: ERUPTION!!!! Best solo ever? I think so
The other thing I love about him, is that he plays incredibly hard licks but makes them sound SO damn easy, that I listen and think "Ahhhh that ain't hard" and try to learn it, see a tab, and think WHAT THE HELL? He's doing all that there?? You don't even notice!!! To me, that is a sign of a great guitarist moreso than making the solos sound hard deliberately (*cough* Malmsteen *cough*) so people say "wow how does he play that".
Randy Rhoads
Nobody has a knack for picking out the right notes to make a melody sound cool like he does! Plus, was hugely innovative in the arising of the whole neo-classical thing, and Mr. Crowly, Crazy Train, Over The Mountain and Revelation (Mother Earth) are 4 of my fave solos ever.
George Lynch
Great knack for melody and catchiness mixed with a nice flashiness, and has a great tone too! Plus awesome riffs... great guitarist all together! His solos on Back For The Attack especially are just so smooth and sounhe makes it sound easy!
Marty Friedman
Cacophony's Speed Metal Symphony anyone? Dragon's Kiss anyone? Speed Metal Symphony is the best virtuoso guitar album I've ever heard I think. Amazing stuff!!!! Flashy, melodic, but ballsy, slashin' and thrashin' at the same time! Plus his solos with Megadeth are so damn good!
Vinnie Vincent
Great songwriter, excellent shredder. He lacks the melody in his solos the others have, but rather than just sound weak and boring like some other guitarists (Malmsteen again hahaha! sorry I hate him), his over-the-top displays of speed add to the intensity of the music and make for an ear shattering listening experience which I love. Very ballsy, ear piercing, extreme, totally metal stuff. Plus, like with Eddie, I
lovethe way he blends lead fills with his riffs. Oh and his riffs are the BEST, especially in songs like Animal and Shoot U Full Of Love... they flow into each other so seamlessly you don't notice the riffs making the verse, bridge, chorus, etc.
Other honourable mentions:
Steve Vai - just haven't heard enough but what a talent!
Michael Angelo - arguably has easily the most technical ability out of any guitarist here (plays faster than anyone, and with left and right hand simulataneously on a 4 neck guitar shpaed like a cross!), just usually doesn't fit it into the context of the song hahaha. He can though, listen to Crazy Love by Nitro, nice and melodic hehe.
Zakk Wydle - one of the most exciting guitarists ever.
Slash - for his attitude and balls, the Sweet Child solo, and he looks cool