This place is hands-down the best tasting burger in Southern California. So far the only burger I've had that is better was at Cheeseburgers in Paradise in Maui. The fact that they are really inexpensive is a plus, but the icing on the cake is that the food is always served to you by extremely friendly and polite workers. You can customize your burgers any way you want: grilled onions, animal style (all the fixins), protein style (low carb), even add more patties and cheese (4x4, 6x6, my friend had a 10x10 once!!) In-N-Out rocks my world!
Pros: Great tasting food, friendly service, clean