Rich, there is a lot of bias and infighting within the therapy world. I, for the benefit of the traumatized people I work with, refuse to take sides when the research indicates they all work (equifinality or the dodo bird effect). I always get input from the client on what they think is the best fit for them, and every session I use feedback from the client to tailor the therapy. The critique that PE re-traumatizes people is weak since PTSD itself re-traumatizes people. This top down- horizontal and bottom up argument is not based on sound research but personal bias. This article might help to clarify. http://www.scottdmiller.com/what-heals-trauma/