Without a doubt, Grey Goose. That said, for a more moderate price, I'd say Stoli or Absolute. All of these tests that claim they beat Grey Goose must be being tasted by people who want to taste/feel a bite. IMHO, excellent vodka should have no flavor or bite other than smooth heat running down my throat. Damn. Now I feel the need for a Grey Goose Martini, straight up, extra dry, 2 olives - shaken, please. On that lovely note, Cheers!