Thank goodness I asked! Looks like VSL#3 and Visbiome has had some major DRAMA. I definitely will go with the Visbiome as he is the original formulator and carried it over to this company after he severed ties. Looks like ECN might not be something I'd want to try from what people have said. It seems to have iffy effects and is pretty hard to even get here in America.
And thanks for the other recs! I like Keifer so maybe I'll give that a go as well. Florastor seems worth checking out too