I picked up cheeseburgers from three popular chains in the Midwest: Freddy's, Culver's, and Sonic. Meredith Schneider I tried cheeseburgers from Culver's, Freddy's, and Sonic to see which chain is best in the Midwest. The Sonic burger was filling, but the bun felt a little too soggy. My Freddy's burger was OK. My favorite fast-food sandwich came from Culver's, which is known for its ButterBurgers. It's hard to pin down exactly when and where the hamburger was created. After all, similar ground