In-N-Out is the hands down best franchise/chain burger joint around.
A simple no-frills menu means that they can concentrate on providing the freshest, highest quality ingredients, such as crisp lettuce, fresh tomatoes, never frozen patties and fresh cut fries cooked in clean oil. Also the free refills on drinks is great, especially during summer in Phoenix.
Decor wise, In-N-Out keeps it clean and classic, like the burger joints of yore. Service is quick and friendly, likely because the the staff are paid higher the minimum wage
For those in the know, there is a 'secret' menu that can be used to customize your orders.
4 out of 5 stars because, it is still a chain after all...