Our breeder, who has been breeding Labs for over 25 years (and who has a considerable reputation in the field), has all of her dogs on ProPlan. She asked us to keep our dog on that for at least a year, and to trust her and all of the years and dollars behind ProPlan rather than something trendy.
While I think research is a very good thing (and indeed researched breeders for six months before choosing one, and researched foods, as well), "research online" is next to useless, and the looks on the face of some friends should not be prioritized over the recommendation of your breeder (assuming she or he is a good one).