Katie Canales/Business Insider
- From opposite sides of the US, both In-N-Out and Shake Shack have earned names for themselves as go-to burger restaurants.
- So has Whataburger to the south. The Texas-based chain has even given more upscale fast-food joints a run for their money.
- But how do the three burger restaurants compare?
- All three chains have a lot to offer, but Whataburger wins for a key reason: its perfect marriage of quality food and large portions.