By all respect, "neutral" can only be somebody who has no clue about the program. So if you want advice from people who have no clue, I'm not so sure if that is a smart decision.
The testimonials are from people who have been in the program, they know better than anybody else what's going on. They are the most "neutral" as they have nothing to gain from anybody joining - more likely to loose.
I know its these days the new cool thing to use the word "marketing" and look like you understand everything. The truth is that everybody has a bias and an agenda, especially those who claim they are "neutral" or "objective".
We just don't hide it and treat people like adults who are able to make a decision based on the info they get.