In some ways many of the things I like about 5 Guys are the things I sometimes wish were different. For instance, I admire that as a chain they are sticking to the absolute basics - they have burgers, cheese burgers, grilled cheese, hot dogs, sodas, fries and I think there's a veggie burger but don't quote me. There's no chicken sandwich, no onion rings, no milk shakes, no appetizers, no salad etc. And those are the things I miss once in awhile when I eat there with my husband. There are the moments when I'd prefer onion rings to french fries, particularly because I'm not a fan of their style of french fries although they have improved over the years. I do like that they serve them with vinegar and they give you a ton. At the same time we never, ever finish all the fries and sometimes I think our meal would be cheaper if they gave us a few less. Once in awhile I'd like a milkshake like Jake's or the Charcoal pit has, or heaven forbid I don't really feel up to a regular hamburger and I might enjoy a grilled chicken sandwich.
I know, if you're not up to the whole burger then just get a single patty you say - except that doesn't really work because the bun to meat ratio is just off then. Regular burger with a double patty is the way to go, don't go overboard on the toppings even though they'll let you have all the free toppings you want pretty much. I stick to mayo and fried onions and get a little ketchup from the dispenser to dab individual bites with. While your mouth might say the burger tastes like another, your stomach might hate you later if you over-indulge so consider resisting. Also if you or anyone in your group has peanut allergies then know in advance they serve peanuts and the entire place has been exposed to peanut dust, shells, debris etc.
Now that they have online ordering my husband has been using that quite a bit to make sure he can get a quick lunch while working nearby. He told me the other day a bit sheepishly that its gotten to the point when he walks in the door they recognize him and are holding his order up in the bag waiting for him. They're more expensive then many of the other national burger chains but you're paying for fresh, never frozen, high quality meat and the attention to detail the employees give to each order. It might cost more, or take a little longer but its worth it.