It's been three years since I left Texas and the easy access to great Tex-Mex cuisine. Whenever I meet a fellow Texan in Las Vegas, they recommend this spot when the cravings hit. I put off visiting for the longest time, but now that I've popped in a couple of times, I can agree that they are both consistent and fairly close to what I liked back home.
The menu is huge and a bit overwhelming. I find it best to go with a combo, all of them are enormous portions. The #5 is a favorite, with a cheese enchilada (that red sauce!) and a green chile pork burrito (wet style), AND a crispy chicken taco. It's a ton of food even before the requisite chips, salsa, and bean dip, plus a bowl of warm fideo soup, and sides of rice and beans. The prices are a bit high ($15-20 meal) but the portions are large enough to share- my guy and I usually add on a chile relleno ($5) if we're extra hungry.
The service is friendly and attentive. I love the traditional decor and server uniforms. This spot reminds me of Mi Tierra on the Riverwalk, but without the tamed-down flavors for the tourists or an on-site bakery. I find that I prefer dining in the bar area where I can get in and out quickly without waiting for a table- this spot gets pretty busy, even on weekdays.