[Gpsma]

Originally Posted by GoodLife

America's foremost mixologist Dale DeGroff (who tended bar at New York City's famous Rainbow Room)

the U.S. government's definition of vodka, said DeGroff, is: "Tasteless, odorless, colorless … You are buying the bottle. You're buying the sexiness. You're buying the whole package.

Which brings us back to our little experiment. Can people really tell the difference in taste between the expensive and cheaper vodkas? Our blind vodka taste tests were conducted by Eben Klemm, the director of cocktail development for B.R. Guest, a chain of upscale restaurants.

The taste test included five super-premium vodkas (Ketel One, Belvedere, Hangar One, Stoli Elit and Grey Goose) and one economy brand (Smirnoff).
Most of the testers thought they would be able to recognize their favorite brands, which didn't surprise Klemm. "Everyone's a snob about their brands," he said. "I mean, they've built their whole nightlife identity on which brands they are -- whether they're a 'Belvedere man' or a 'Grey Goose woman.'"

read the rest here

Does Premium Vodka's Taste Live Up to Its Price Tag? - ABC News

If you drink Vodka straight up you can tell the difference...but I agree you may not be able to discern a particular brand