There is a Mom and Pop Mexican restaurant in Santee, Ca. called Coteja's that is the best in all of San Diego (and that's saying a lot!)
Then there are a few really good Mexican restaurants in Laredo, TX - yummsy!
The best I ever had was in Mazatlan, Mexico and a friend who was born and raised in Mexico was taking me to places I wouldn't be able to find on my one. The best of them all!!!
I hope 2Vermont is close to one of these locations... ;D