I really like the Quesaritos, personally. It's decent food for the price, but honestly you're not missing too much. I prefer burger joints for my fast food as well. Whether or not you have terrible shits depends on your Mexican food tolerance, though (I think it only happened to me once out of all the times I've eaten there?), I'm not really sure why some people go crazy about the whole "oh god i'm shitting everywhere" thing.