first off,... to the answer the question,
Stoli,
second,... looks like I need to try some of this Russian Standard,
third, but maybe first,
I had this vodka in Austin Texas, made by a small Texas distiller,..
it's called Dripping Springs, I would put it up against Grey Goose, or any other top shelf vodka,
you don't even have to put it in the freezer.
I brought back the only 2 bottles they had in the liquor store i went to, definateley worth looking for,..
http://www.drippingspringsvodka.com/home.html