I don't think there's really a right or wrong answer to your question, and an anecdotal experience with one sort of qualification doesn't necessarily predict a subsequent experience. I think you need to investigate what sort of preparation different credentials offer, and then decide what is important to you. Research shows that the relationship is the significant factor that correlates with therapy perceived as satisfactory. And that's why it's so difficult to find a T. I wouldn't put much stock in impressions from what are essentially advertisements. They are marketing more than accurate reflections. They tell you more about what conditions are of high interest at any given time than about a T's competence.