Well... Vodka is *supposed* to be neutral. In a blind taste test (baw haw haw LOL), I was able to tell the difference between Hangar 1 (made from grapes), Grey Goose (less burn) and Smirnoff Red label. All three vodkas were 80 proof, all three were served at room temperature and each was followed by a cool water rinse . So, "grain neutral spirits" or not, one *can* tell the difference.
My favorite vodka in the world is one I cannot get. Olefant vodka from the Netherlands is the nicest high and virtually no hangover with 95% of the Olefant drinkers I know. Why might this be? Supposedly all vodkas are created with a more or less neutral/equal outcome.
The worst vodka? Ed phillips & Sons in Minneapolis bottles a little concoction called "Karkov." Distilled hell.
Back to where to buy: I think the duty free offers the best prices, but what is even more important to me is that by buying my smokes/drinks on the way into the country, I save myself a trip later in the vacation. That makes the minor inconvenience of hauling bottles along with your luggage a decent tradeoff. As noted, there are luggage carts readily available, and once you've left the airport, a dozen dudes will pester you to help you with your stuff. Everytime I've used the taxi kiosk, a driver has quickly appeared to help me with my luggage and into the taxi.
I say use the duty free.
