If you're up in the Meijers/Walmart area and don't want to eat at the chain restaurants, then head on over to Taco Loco (in the Menard/Slumberland area). This place is the real deal. They have such a huge selection of Mexican fare that you can't go wrong. I usually order three tacos and listen to the other reviewers.... order the Beef Tongue!! It is so tender that you don't even know that it's tongue. I used to hate tongue (and still hate liver) but after eating this, I'll still hate it, but I'll only eat it here. They prep the tacos with cilantro and onion and they come out fast and hot! You can get whatever kind of salsa you like -- I usually opt for the verde. They also have the Mexican sodas -- like Juaritas and MEXICAN COKE/PEPSI/FANTA (ie made with SUGAR and not corn syrup). So don't get the stuff out of the soda fountain and ask for the bottled stuff in the fridge behind the counter.
They have daily specials (like .99 tacos on Tuesdays), typical combos, menudo, corn, and whatever else you can think of. It's a really good lunch spot up in the north Prospect area! And the prices are very reasonable too -- less than $10 for a great lunch.