I know that I've heard "better" , or more technical solos from a number of artists, SRV in particular, but this one is my favourite.
Grateful Dead - Going Down The Road Feeling Bad (Jerry Garcia guitarist)
To me, it just encompasses the "get up and shake your ass" feeling of a Grateful Dead concert. Nothing else like it.
Solo begins at around 6:10.
https://www.youtube.com/watch?v=QTPndsG_KA4