I've never seen Clase before, but I'll look for it. Don Julio is good stuff, though. I keep wanting to get some of the 1942, but I can't get past sticker shock. *edit: Actually, I think I *have* seen and tasted Clase at one of the tequilerias in Cozumel. Very fine stuff, but I think it was a bit above what I wanted to pay when I was there.