Just spent 3 days touring around arizona on an f800st. Rode up to Sedona via Jerome and back mountain roads. I'd call that a black diamond ride, super twisty switchbacks, wicked fun and beautiful. Second day I rode out towards globe. Blue square road, sweeping twisties and very scenic.
My experience with azride.com couldn't have been better. They also have a lowered GS and st available which is pretty unique among tour companies.
Too bad it's going to be effing freezing back home in Philly.