I am going to go ahead and start off by being blunt, then I'll try and soothe the wound. Bang Bang is extremely overrated and overpriced for what it is. I have given it multiple tries. It just is not the best burger and you leave wondering the following: 1) why you just paid an arm and a leg while you're 2) still hungry 3) not satisfied 4) questioning what the hype is.
I have had fries, a burger (prior to being vegan) and since being vegan have had the burger bowl with the black bean burger and no cheese. Portions are fairly small. The black bean burger is tasty enough but nothing unique. The salad portion was small and toppings were not plentiful enough. But the lettuce was crisp and nothing was poor quality.
As for the environment itself, the staff members have always been friendly and it is always clean inside. I especially love the girl who always chats with me about her being vegetarian and me vegan. She was very easy going and accommodating when I had to make my order a little more complicated.
It is definitely not the worst place but I can see spending that amount on a meal elsewhere can benefit my hungry stomach and craving tastebuds more.