As far as I know this is the largest Mexican grocery store in Vegas. It is always busy but the service is fast. Every now and then I will have a taco night at the house and ordering everything from here. The shrimp or combo shrimp and octopus ceviche is always delicious. The freshly made guacamole and pico de gallo as well.
The tortillas are made fresh out of the machine and I always get a bag of these chips to eat the ceviche with. As far as the meats I usually get some carne asada and marinated chicken or pork from the butcher. Every now and then there will be deals in here so keep a lookout when you come.