I take the meal as a whole rather than just the burger as mark of a good burger chain. In N Out burgers can be tasty, but like you I need at least a 3x3 before I'm satiated. At Whataburger, I'm satisfied with the regular size burgers off of the main menu, and the fries are decent but the onion rings are even better. Top it off with spicy ketchup and it's a hard combo to beat.