I see a lot of negative reviews here based on the bad customer experience. Maybe it's because I lived in Chicago, but this has never even crossed my mind, especially when confronted with the incredibleness that is the stacked enchiladas.
Take a step back, order a sangria, snack on some chips and prepare your mouth... no--your whole body for this. The first bite of these stacked enchiladas (always order them with green chile, might I add) will knock your socks off. Literally. (Side note: if you see one of my socks...)
The place has gotten a bit too busy, but it's still well worth the wait. Or, for those not content to drink sangria while waiting for a table, you can check out the Mesa one; I've never had to wait long there, but it just doesn't have the same character.
I look forward to visiting the suburban sprawl that is the Phoenix metro area each year, and this is in no small part because of this place. Los Dos makes a mean, spicy, enchilada.