I had a pretty decent experience here for an airport fast-food eatery. First, I love that one can have tofu as a choice of "meat" and that opens up possibilities for a vegetarian. And yes, several choices for meatheads. :-) You have the choice of portion size and white or whole wheat tortilla. I ordered a small, whole wheat tofu Bangkok burrito, which was pretty tasty, especially the slaw that have a zing. Tofu texture was firm. The portion was enough to tide me over until my layover in Chicago.
The customer service was somewhat of a pleasant surprise as they were accommodating and friendly with my request to mix lemonade and ice tea, and all of my questions. Last year I had a "run-in" with a lady at Quiznos (I think) who wouldn't make food 30 minutes before closing time. I'm sure she wouldn't have thought twice about smacking me for asking.
For cleanliness, I honestly wasn't looking around much, but nothing gross stuck out. The communal eating area shared by patrons of all of the fast food joints was a bit dirty, but I can't really blame that on Currito.
I'd give 3.5 stars if I could.