Fat burger is and will be the one place to have a juicy tasty burger. It's wait may be long, it's cost may be more than the average burger joint, but when it comes to taste and the fries it's the best.
Note that Fat Burger as In-n-Out totes the sign of fresh and real ingredients and though both have great burgers I do believe that Fat Burger has the better fries due to personal taste, but those who like Wendy's fries would like Fat Burger fries.
Personally i believe that food needs to be tasted to make a good judgement of your own so go out try it and you should be pleasantly surprised. =)
side note: if you aren't scared of mayo... mix up mayo and ketchup and use that as a fry dip... (the color should be pink, not too white and not too red...)
Pros: Food, Taste, Quality
Cons: Cost, Wait
more