For a fast food chain, this is serviceable food. The various ingredients are within view and you can build you own burrito/quesadilla/tacos. I view this as a North American chain and not a Mexican chain. I know. They sell Mexican dishes such as tacos and quesadillas but these are not authentic Mx. And don't get me started on burritos, an American invention!
At any rate, this is relatively simple food that can satiate any craving. I had a tortilla soup (definitely not the authentic kind, but I wanted a small soup) and a cheese quesadilla.
Expensive fast food compared to Mc Donald's but never regrets when eaten.