Hi bobshc,
we love the Sara Lee sweet breakfast breads. If they start to get a little dried out, we make french toast with what's left. But as a plus they do stay fresh for a long time, and we live in dry Colorado.
I have also found good hotdog/hamburger buns at a store called Sun Flower Farmers market....but I believe they are just in Colorado.
If there is a Jewish bakery in your area, they often make buns for kosher deli's (no corn product at all), and will be happy to make up a small extra order for individuals.