IRC's "Three Star Blue" has to be the single most important blend or, possibly "Balkan Supreme." They are the blends I rely on most every day.
If you're looking for something that's a good approximation of the old VaPer Three Nuns, try Savinelli Doblone d'Oro. None nicer.Thanks Bill, no I haven't tried 3 nuns yet as I heard it was a shadow of what it was, thanks for the link to the article I will check it out.