That must be the secret. My experience has been with Cuervo Especial for the most part, but I've sunk to drinking vile potions such as "Potter's Tequila" on a few occaisions-- think I would have enjoyed sterno about as much and had less of a hangover.
I'll get a bottle of Patrón one of these days and try it.
A little salt and a lemon or lime, you know the drill. No Beer, other hard stuff or mixes.