Arizona has a great selection of Mexican food. I had a delicious meal last night, Combo #4 Beef Taco and Bean Tostada for $7.49. Beef was stringy (not ground beef like from Taco Bell) and everything was healthy, not oily.
I did find the taco shell a bit hard though, I would have preferred more light and crispy. Looking forward to trying the rest as they have quite a selection on their menu!