I finally broke into my bottle of Kirkland Signature Vodka from Costco this weekend can honestly say that it is excellent. Not only is the bottle attractive, but the stuff inside is premium vodka - clean taste, no aftertaste, and a smooth buzz (none of us had any problems the next day). Five times distilled in France. I would say this stuff ranks right near Grey Goose.
This vodka is also now sitting in both coffee (Peets) and chocolate (Scharffen Berger) liqueurs which will hopefully turn out excellent. It is $29.99 for a 1.75L bottle at Costco - if you are in one of the lucky states where spirits can be bought at Costco. The vodka compares to the Grey Goose bottle at $47.99, and is far superior to the Absolut at nearly the same price.