You can get any old hamburger for a song, but these are the beefiest bangs for the buck.

1. In-N-Out

   Los Angeles, CA Details & Reviews

   In-N-Out is so confident in its food, there are only three options: burger, fries, drink. Devotees (and there are a lot of them) say it's the best fast food burger on the planet. Everything's fresh -- no freezers or microwaves -- and burgers are $2. The famous Double Double (double meat, double cheese) is only $3.

2. Love Shack

   Fort Worth, TX Details & Reviews

   You can get a burger anywhere, but a burger for under $5 from an Iron Chef champion? Celebrity chef Tim Love won Battle Chiles, and he elevates the humble hamburger to special status at Love Shack. Though the bacon- and egg-topped Dirty Burger (pictured) is $6.24, most of them are under $5. Combos are equally seductive -- burger, fires and a drink for as little as $7.

3. Kingdom

   Miami, FL Details & Reviews

   Named one of the best burgers in America by the Miami Herald, the Kingdom burger is a top deal for two reasons. One, these char-grilled sirloins are bursting with flavor for the price (starting at $6 for a half-pound Queenburger). Two, you can eat for free if you're up to the Doomsday challenge: Finish the 24-ounce Doomsday burger with herbed fries and onion rings in less than 15 minutes.