Kill die bleed
Honestly I think Popeye's is as good as fast food gets in this country....love the tenders (I rarely eat fried chicken with bones anyway) and I love the sandwiches too, as long as there aren't any pickles on them and I dig the cajun fries, mashed potatoes and cajun gravy and red beans and rice too. Desserts, the fruit pies are a little thin but edible. Wish they'd bring back the beignets.
Whataburger, haven't seen one around here. I have been to a Red Robin though. Uhm...good, but no idea why it cost so much more than "regular" fast food.
Sonic - I guess the drinks were always the primary allure (grape vanilla coke!) as a kid but I do like the footlong chili cheese coney with crispy bacon. If you buy slingers you only get four.