I'd say the best solo I've ever played was this one I made up one time when no one was listening to me. :D
As far as other people's solos go, I do a bastardized version of Eruption (hey, even Eddie doesn't play it note for note all the time)and some of my favorites to play are just about all of AC/DC's solos. They arent difficult at all but they sound just totally awsome.
And I almost forgot, I've been playing about 2 and 1/3 years.