This place is usually quite busy, but definitely worth the line and wait. The food items are always prepared to order. I like kimchi but I'm not crazy about it - I like their kimchi fries and would give it a 4/5.
Their Banh Mi is quite good.. however I'm more of a traditionalist and would prefer the usual cuts of meat and pate that goes into it (as opposed to pork belly or bulgogi)
My favourite item on their menu by far is the pork belly Bao. It's soo good - the bao is always steamed fresh and it's a good size (palm of your hand) and meat always tender and seasoned to perfection.
The only thing that's keeping me from giving them a 5 is their price (it can get expensive) and their misses with me for other menu items.