This where most people go about tequila all wrong. If your shooting it, your doing it wrong. If its Silver you mix it. If its Anejo you sip it (NOT in a shot glass) like you would a Scotch or good Bourbon. If all you want is to get drunk, stick to Fireball
We have a restaurant close to us that has about 70+ bottles of tequila and mezcal, and you can put together three 1oz glass taster flights. Its been a great way to try lots of different brands without spending too much and getting too trashed.
One of my favorites for the price is El Zacatecano Anejo