OK they are a chain, but maybe I have rated them higher because the only other Mexican / tex-mex style restaurant I have tried in Pittsburgh was Mad Mex and compared to them anything has to be better.
Service was fast and efficient and you received good value for your money. One of the highlights was the enchilada sauce. It contained a lot of chili powder and is probably the best chain restaurant enchilada sauce I have ever tasted, outside of chains it's probably in the top 10 and that is saying something since I lived in SoCAL for 30+ years.
Some misses was the chile mashed potatoes, I wasn't forced to order it, but it just doesn't go with the theme. Their tacos are highly Americanized although their tortillas are good. And their steak fajita salad was just fajitas dumped on lettuce and a few accompaniments, not really inventive, but you got what you ordered.
I'm not dying to go back, but the food is much better than the other competitor I already mentioned.