Just in Mexico City with friends and our guide from Eat Like A Local (10 stars to them, can't…read morerecommend enough, read my review) told us El Liquor store was the place to go for tequila when we asked.
This place was great. Nice selection, and they asked questions and let us sample based on what we were looking for ane what they thought we would like. In addition to tequila we tried some liquors. One of the liquors we enjoyed so much that between our friends and us we wanted three bottles, but they only had one left. So they checked their orders, established would be in before we left and delivered them to our hotel! Amazing service, especially because their prices were very reasonable and we spent less than $100 there.
The fun purchase was the salts - they have worm salt, grasshopper salt and scorpion salt. We had been on hunt for the grasshopper, after being served a drink at bat that rimmed glass with mix of tajin and grasshopper salt. It's an interesting combo that enhances the drinks! Plus, fun gifts.
If you're in Mexico City, shop for yourself and friends here.