I've never heard of or tried Five Guys before but found myself completely sold on the food. The burgers here are a little overpriced and take a little longer to make -- but they are worth it all. All of the toppings can be mixed and matched at no extra cost. I enjoyed my burger with "all the way" toppings. The only downside is that their fries are pretty generic thick-cut fries and nothing special -- but they do come in really large portions perfect for sharing.
I definitely plan on coming back and ordering multiple burgers each time to stock up for future meals. Just keep in mind that their default burger comes with two patties, so you'll have to order the single patty explicitly.