I'm sitting here drinking Costco brand (Kirkland) anejo tequila. It's 100% blue agave and very tasty. I'm going to have to do what I did last year when I ended up with 3 different brands of resposada tequila; have a tasting across various price ranges. There WAS a difference with the more expensive tequilas having a smoother taste. I'm hoping that Costco will also carry the Patron gift set like they did last year which had the 3 grades of tequila in one tasty package (going for about $100). I grew up drinking Cuervo like most gringos, but as our tour guide in Mexico told us last year, "If you drank Cuervo, you didn't drink tequila."