I tried In-N-Out and Whataburger side by side - and it's clear who makes a better meal

Whataburger is to Texas what In-N-Out is to California. Both companies are still family-owned, regional chains - an anomaly in a market that's dominated by national multimillion-dollar fast-food companies.

In-N-Outs are scattered throughout the Southwest, while Whataburger locations line the South from New Mexico to Florida. They meet in the middle, in Dallas, Texas, where I ate both side by side in a taste test.

While Texans swear by Whataburger's more Southern menu items - Texas toast, patty melts, biscuits - Californians rave about In-N-Out's fresh ingredients and "animal-style" burgers. I ordered a burger, large fries, and a chocolate milkshake.