This two location "chain", one here in Recoleta and one up in Rosario has a decent sounding tex-mex…read morestyle menu of nachos, tacos, burritos, and quesadillas. They offer fast delivery - my order arrived in under half an hour. Their pricing is okay - running a little under 50 pesos/taco, for example. And, as fast food, it's not bad, I've certainly had worse, but I've had better too, at, say, Taco Bell.
The tortilla shells for the tacos are crunchy, a bit misshapen - clearly not commercial ones, so they're making their own, but each, for example, on the Azteca, the closest to a classic tex-mex taco they offer, had maybe two tablespoons of ground beef in the bottom, three or four bits of diced tomato, a few shreds of mozzarella cheese, and the rest is shredded lettuce. I didn't note any guacamole in it, if it was there it was scant. The accompanying hot sauce (extra charge of 24 pesos for about two tablespoons) at least had a mild kick to it, though it was mostly tomato. The "mini-burrito", my bad for not noticing that versus the regular burrito doesn't contain beans or rice, was an oily flour tortilla wrapped around what amounted to a block of mozzarella and an equal amount of shredded chicken breast with little to no seasoning.
I'd rather walk a couple of blocks over to the neighborhood Taco Box, albeit more expensive.