This is our go-to Mexican restaurant in the Concord vicinity.
Chips and salsa are great, but if you ask they will bring out different salsas - we've gotten a hotter chipotle salsa and an avocado salsa.
Portions tend to be huge. I've had their fajitas texanos and their street taco's - both were terrific.
If you like shrimp and spicy HOT, I recommend their camarones ala diabla - shrimp in fiery hot chipotle sauce. It brings tears to my eyes, but it is soooo good.
Update May 23, 2016:
It appears there has been a change of ownership and changes to the menu as well, all for the worse. Fish / shrimp tacos are now breaded, and a request for grilled shrimp tacos yielded shrimp that looked like they were sauteed in butter, not Mexican style in any way. Fajitas for two had only eight tiny shrimp. Disappointing.