I love Lance Keltner's playing a lot, but I don't get as much out of his demos for some reason. He makes everything sound good and like himself. I did get a lot out of Pete Thorn's demos of the Suhr Badger.
Sometimes those silly little demos where they play certain chords and progressions over a variety of settings with an array of guitars helps as well. I just think great pro players can do demos for a solid state Peavey amp with a blown speaker sound decent.