I just returned from a trip to San Diego. I had my first In-N-Out Burger experience. I went back three times.
I thought that the double-double was outstanding . The patties were a tad thin, but the cheese was think and gooey, the buns very soft and fresh, sauce tasted great, the lettuce and tomato added some nice crunch.
The fries were absolutely exemplary. They tasted nothing like any "fast food" fries I have ever had. I could see that they were putting huge potatoes through a chopper, soaking them and then tossing in the oil. WOW! Best fries I have ever had!
The shake was very disappointing, however. Came out of a soft-serv machine. If they only took the same care with the shakes they do with the other stuff, this place would be heaven.