I ranked 13 fast-food double cheeseburgers. The best offered big flavor for a low price.

Double the patties should mean double the deliciousness, but does it?

For a definitive ranking, I tried practically every fast-food double cheeseburger on the market to determine which was best in terms of taste and value.

I tried double cheeseburgers from McDonald’s, Wendy’s, Burger King, Shake Shack, White Castle, Whataburger, P. Terry’s, Five Guys, Cook Out, Checkers, Sonic, 7th Street Burger, and In-N-Out.

With National Cheeseburger Day on September 18 approaching, chains are rolling out limited-time deals to celebrate — McDonald’s, for example, is giving away free double cheeseburgers with a $1 purchase. So it’s a fitting time to see which…