I don't know what George's favorite vodka is - I'm certain it's something I could never afford - but I can tell you my vodka of choice: Finlandia.
Why? Because it's inexpensive but not so cheap that it's on the bottom shelf at the liquor store. The bottom shelf is reserved for alcohol that should be covered with a brown paper bag and drunk under a highway overpass or at a fraternity party.
Thank you for your time.