In'N'Out Burger is the best IMO. All beef ground fresh same day onsite. Potatoes cut into fries right in front of you. 3 items on the menu: #1 single burger, #2 single cheeseburger, #3 double cheeseburger - that's it. Have never been to any In'N'Out when there wasn't a long line - if it's lunchtime or dinnertime the line is always out the door. But they're so efficient the line moves fast (ever work in a factory that only makes 3 part numbers - AND hires intelligent help for good wages and benefits?). They refuse to franchise or be publicly owned, so they're only in 5-6 Western states so far. But huge cult following, including movie stars in Hollywood.