As far as fast food ges, it's the only one I eat at. Frequently my the cheese on my quessadillas id not melted and when you say no tomatoes or onions, you will almost always get tomatoes and onions. But, it's cheap, fast and it usually tastes really good at 2:00 in the morning. Always a hopping place after the bars close ;)!
Pros: Cheap and generally edible
Cons: soemtimes not warm enough, orders frequently wrong and cheese not melted.