For a fast food burger Whataburger is great! I've come thru their drive-thru many times over the years and never had a very long wait.
If you get a bad burger or something is wrong, believe me when I say it has happened to me once, I wrote to the corporate office, and they corrected the problem pronto. Whataburger really cares to retain customers and make you happy.
I like the taste of their burgers, because they use....real meat! I would rather go here than McDonald's, because I really am not sure they do use real anything there (i.e., fake meat, fake ice cream and so forth).
The biggest plus with Whataburger is if you ruin the turkey for Thanksgiving Day, Whataburger is open every day of the year including Xmas...LOL!