If you really want to get a sense of how terroir can affect agave, look to Tequila Ocho, an estate-grown offering that's notable for being the first to carry a "tequila vintage" designation signifying the year, harvest, and location of its agave. Showcasing the unique agaves of the Arandas and the Camarena "Ranchos" near the Lerma river, Ocho emphasizes the personality of that soil by focusing on the nuanced differences, rather than the consistency, from batch to batch, bottle to bottle. "For an entry-level tequila, I love Ocho blanco," say Ivy Mix, owner-bartender at Leyenda in Brooklyn, New York. "It comes out annually with different vintages and is always spectacular. A great one to collect and learn about terroir in agave."