After taking a cruise to Mexico and touring a couple of tequila factories, I've learned a much better appreciation for the agave derived drink. Our tour guide said that there are over 2,000 brands of tequila in Mexico. The difference between good tequila is remarkable. A fantastic "bang for the buck" tequila is from Costco. Their Kirkland branded Anejo is remarkable and deserves to be enjoyed on its own. Obviously, there are better premium tequilas, but you'll likely pay at least $80.00 or more for them.
Someone on an earlier page mentioned Evan Williams. I agree. Don't let the economic pricing make you think that it's more suited for cleaning carburetors.
I'm drinking Seagram's 7 Dark Honey right now... interesting...
These are a must! http://www.amazon.com/Rocks-Whiskey-.../dp/B002GZX2DE
My wife surprised me with these on Father's Day. They're very "worth it".