Two Vietnamese spots for banh mi greatness

My wife’s and my daughters’ brothers are quasi-professional enjoyers of good food on a budget and have been trying to get me to try Vietnamese sandwiches for a year or more, but I have fought back, remembering some place on Argyle Street years ago with some kind of nasty fish soup that had been fermenting in a barrel for a long time. I was wrong to hesitate because it gets a lot better …