Hardee's Charbroiled Angus Burgers

Prices are typical U.S. menu prices. Each franchise sets its own, so your store may be a little higher or lower.

A second patty adds about $1.00 to $1.50 and roughly 270 to 280 calories. It also nearly doubles the protein.

• Famous Star to Super Star: $1.00 more, 580 to 850 calories, 28g to 49g protein.
• Big Cheeseburger to Double: $1.50 more, 520 to 790 calories, 27g to 48g protein.
• Mushroom & Swiss to Double: $1.50 more, 580 to 860 calories.

For protein per dollar, the Super Star is the strongest pick on this list. For the lowest price and calories, the single Big Cheeseburger wins.

The Frisco swaps the bun for toasted sourdough. It comes with bacon, Swiss, tomato and mayo, and no lettuce or onion.

That bread change makes it feel closer to a patty melt than a regular burger. It's also heavier than it looks: 740 calories for the single and 1,020 for the double.

The Monster Burger is the biggest burger on the board at 1,010 calories and 2,140mg of sodium. That sodium figure is close to a full day's limit before fries.

It costs the same $7.99 as the Double Bacon Cheeseburger. The Monster skips the lettuce, tomato and onion and adds extra bacon and cheese instead.

• Hold the mayo on any burger to cut some fat without losing much flavor.
• Ask for sauce on the side if you're driving a long way. The bun stays firmer.
• A lettuce wrap in place of the bun is available at many stores on request.
• Adding bacon or an extra slice of cheese costs a little more. Removing toppings is free.