I have the VHS and most of the facts are correct, as far as I can tell. It isn't supposed to be a "sensationalized" effort. In fact, from all I have seen of the video, it's presented in a very matter-of-fact way.
They're not looking to make "believers" out of people, but present what happened along with a critique from both sides of the issue.
Granted, I wouldn't be watching this for the same purpose as I would the Exorcist. The Exorcist was meant to scare the bejeezers out of you, and this seems to be designed to inform. All in all, well worth the money they charge.