I like both but Whataburger is definitely awesome.
When I stayed in Texas a short time, it was usually Whataburger and Jack in the Box for my fast food.
On rare occasion I could go to Chik-fil-A.
If I eat fast food in Texas, it’s usually Taco Cabaña, which they don’t have out here in California.
I also like to visit places that serve crawfish and gumbo file as well as barbecue.You can tell you’re in a real Texas barbecue joint when you see a roll of paper towels on each table.