In and out is the best fast food burger chain. Having grown up on the West Coast, I frequented several locations on a regular basis. Now that I live in the Midwest, every time I return for a visit, stopping here is a rite of passage. No matter how busy they are, the staff moves so quickly. Even in peak times, I've never waited more than 15-20 minutes. It's always clean and in top condition inside as well.
Although the menu is simple, everything is good. I go with the 4x4, which is not on the menu board. It's 4 patties with 4 pieces of cheese. Their burgers are so fresh, perfectly cooked, and well seasoned. The fries are also amazing, as they cut all of the potatoes in the store.