My personal opinion is to seek out a therapist with a lot of experience, like 20 years plus. I think regardless of education the best ones are those with the most experience. Also, try a handful and see how you feel talking with them. Keep in mind the relationship is said to be most important factor for success, more so than the technique used. That being said some techniques IMO foster more of a relationship than others, for example psychodynamic therapy involves a lot more relationship than CBT (again IMO). Trust your gut on which therapist is best for you. For me, I think finding someone I thought I had a lot in common with, that I trusted was key. A lot of it was totally subjective.