agree with both of you on that you cant beat chicago food, go and stay there many times a year and both of those places are great, as with pretty much any other place you go.
there was a great place in grand forks nd called grand junction, grilled steak and chicken sandwiches, that somewhat compared to food in chicago and they got all there bread from chicago and thats why it was so good. used to eat there pretty much everyday in between my classes at UND.
but for a chain restraunt nothing can compare to chipolte