There's a lot of Mexican options in Mesa, but this one is one of the best I've found. I used to go to Tia Rosa's, but more often these days we hit up Senor Taco. The portions are huge and value priced, and they have a great salsa bar. I usually get the Special #2, which is a stuffed carne asada burrito with 3 rolled tacos covered in guacamole, and a soda, all for under $10. I leave stuffed or with a to-go box (usually the former). You might not think much of it as you drive past the strip mall it is a part of, but take the detour and enjoy the big meal. There is limited indoor seating, and although there is a large patio I wouldn't want to sit outdoors in the summer.