As far as I'm concerned, Guthrie is at the top of the food chain. The guy can convincingly play pretty much any style ridiculously well but still manages to have an extremely identifiable, unique sound. In terms of chops/technique, the guy is as flawless as it gets. He's got a ridiculously good tone, a great sense of time, an ability to phrase that is rarely heard in guitar players, great intonation, and an ear that anybody would kill for. To top it all off, he's got a good sense of humor and is genuinely having a good time when you're hearing him play. The guy has so much feel about it him it's ridiculous and still manages to show that while out-shredding the best of 'em.
My only complaint about him is that I feel at times that Erotic Cakes is a bit overproduced....then again I had been listening to bootlegs and live recording of all those songs for a year or so before hearing the album. Ideally, I'd like to see Guthrie record something along the lines of Andy Timmons' Resolution (not in terms of style/genre, but in terms of the overall feel and approach to the making of the album)