I'm telling you with certainty that I could I could tell the difference on my 1st, 3rd, or 18th drink. While I'm eating an italian beef. I will admit that I could only do this when comparing top shelf to bottom shelf, though. I'm not going to claim that I can tell the difference between Belvidere and Grey Goose with 100% accuracy. This is a graph plotting vodka ratings (again, blind tests by an array of professional tasters) against the corresponding prices: http://i531.photobucket.com/albums/dd358/Cloudstrife219/vodka_quality_b_zpsw2ly0uuy.png That's zero correlation. There is, as you say, a "spectrum of quality", but it has no positive correlation with cost whatsoever. $10, $60, doesn't matter. There is loose correlation. The cheap vodkas on that chart that were rated highly are not available at most stores, at least in this part of the country. When I walk into a grocery store, there is nothing I can buy for $10 or $13 or whatever that compares to top shelf. Most places are going to have the real cheap nasty stuff like Skol for $7-$8, then some mid level stuff like Smirnoff in the $10-15 range, then you're gonna have Goose, Belvedere, etc. I wouldn't call that zero correlation. The fact that some small distillery in Idaho or someplace sells a really good vodka for $13 has no effect on my life. But, like I said before, my favorite vodka is not the most expensive, so I totally get you on that note.