Best Nachos in Detroit?
I know you asked about Nachos, but Mexican Fiesta in Dearborn Heights on Ford Road just west of Telegraph is my favorite place for a Botana (with the optional chicken on it) I've never had their Natchos cause I just prefer the ingredients on the Botana better, but I'll bet it is great also as all the food @ Mexician Fiesta is.
Sorry, jjaross, but I agree with a former work colleague and refer to this place as Mexican Fiasco.
Try Mexican Town, esp. Evie's--awesome tamales and everything is fresh and authentic. Haven't had the nachos there, but tacos, soft and hard and the round flat ones (sorry, blankin on the name) are all great.