This Cabrito Tequila is a fine value especially if you can find it in Mexico (where I found it). You can sort of tell because the proof is below 80. A lot of Tequilas in Mexico go a few points below 80 proof, while Tequila in the United States would be 80 proof.
I found Cabrito Reposado Tequila at a Walmart in Puerto Vallarta. It does the job as a Margarita Tequila, and you can sip it or drink it on the rocks in a pinch. Cabrito is made in the town of Arandas in the Mexican state of Jalisco.