I've been going here since I was in high school and lived a mile away; so about 25 years.
There is another location closer to me in Peoria near 75th Avenue and Deer Valley Road. I've been to that location a few times and the food isn't as good at that location. There also used to be a location in Mesa at Southern and Dobson but the service was terrible at that location and the food wasn't good either. That location is now closed.
The Greenway location however consistently has terrific food and my usual order are the shredded beef tacos. These are my all-time favorite tacos and I introduced my wife to this restaurant when we were dating and she agrees with that assessment. If we are hungry enough we'll get a cheese crisp with green chilis which is really tasty. I've also had the chimichanga and enchiladas which are also quite good.
My family is quite fond of this place as well as my wife's friends who live in upstate New York. Every time they come to visit they want to go here.
We get coupons in the mail via the Clipper every month which saves us anywhere between $5 and $10 depending on how much you spend so it's possible to get a meal here really cheap.
We eat here every 1-2 months and we've never had a bad meal.