If you want super duper authentic tacos, I'd suggest driving to Phoenix. If you want a really good taco plate with beans and rice, come to Taco Shack. I think that their carne asada tacos are flavorful and filling. My college student sister introduced me to these guys and honestly between their prices, quality and proximity to my house, this place is my jam. It's never crazy busy in the store and it's well maintained in terms of cleanliness.