Cabo Wabo
I hate Sammy Hagar, always have. But a bartender years ago, after I orderd some Patron, swore that Cabo Wabo was one of the absolute best tequilas on the market. I must say it is quite tasty, and at $35 a bottle, a bit cheaper than the alternative.
Gran Centenario
My favourite for the time being, but it's a bit pricey so I never buy myself a bottle. Don Julio and Cabo Wabo are half the cost and nearly as good, but I know if I ever get serious about tequila I'll probably start lining bottles of that sumbitch up.
Patron is still good. I think I've made the assumption that Patron is the Johnny Walker of tequila since EVERYBODY and their mother likes Patron, but that's unfair. Patron is a fine booze. Johnny Walker is swill.