Mexican on the LV Strip
Forget the strip, go to Toto's on E. Tropicana. I get to Vegas once a year and always have a meal there. It's a short cab ride from the strip and worth it.
Any Mexican you do find on the strip will be worse food in a noisier environment for a lot more money.
Toto's Mexican Restaurant
2055 E Tropicana Ave, Las Vegas, NV 89119