If I go with a guitarist that amaze and confuse me, off the cuff I'd pick Alan Holdsworth. While I can learn the notes, I don't have a clue what he's playing and why it works. Which makes it hard to incorporate into my playing. The same can be said for many of the Jazz players (including horn players). Then there are some guys like Marino who is known as a pentatonic blues rock player, but I've seen him do some amazing jazz work well beyond what you would expect.