Banh Mi Saigon kind of sucks. It's better than Tung hing but still disappointing.
I'd take Ba Le over Banh Mi Saigon. Now if any of you guys tried that Banh Mi Phuong in Hoi An, that's a effin killer sub. Just incredible flavour and bread.
Au Petite - I go there time to time, only for their Meatball sub though. That's it. I haven't tried their other subs so can't say if they are "shitty" as one person put it.
Tung Hing - Sucks, they changed their marinade in their pickled vegetables and it's just meh. From the chicken, sausage, to dac biet, mehhhhh. I do like their banana donut.
Kim Chau - Decent but nothing wow.