My first choice is nama shoyu.
My very last choice is Bragg's. I'm not sure why, but my intuition says to keep away from it. (And that is not to put down anyone who uses it.
edited to add: Nama shoyu is raw/unpasturized soy sauce. Since it's unpasturized, it has a lot of good baterica/enzymes in it, I believe, like lactobacillus.