My impressions, having studied each
Bradley: GREAT info, great prep for dad to help you out. Not so great on the narrow minded attitude of follow this method right to get the perfect Bradley birth, also the reliance on husband as coach disempowered me, in future births I recognized it's me who's doing this, his role is support but I don't need to mostly lean on him because I'm the only one who can do it.
BFW: decent info, not committed to one way of birthing, not committed to natural birth either. The mental approaches to discomfort are pretty good. Especially great to work through feelings, not just a traumatic previous birth, but fears of the unknown too.
Hypnobabies: An overview of good info but you might not be ready if you have to make medical decisions. Not an avoidance of sensation, it's an altering of how you perceive it. Peaceful and aware birthing experience. Supports and encourages a very positive outlook. But if you don't experience the hypno anesthesia you aim for it may leave you without much recourse on how to handle things if it's all you studied, yet if you did prepare a backup plan they say it makes the hypno stuff less likely to work.
Also, Active Birthing had info that adds nicely to the perspective of these all, though is slightly in conflict with hypnosis. I found it worked together in a way though, as chanting my "peace" cue to relax through the waves worked nicely although the more passive and quiet way of birthing was not for me. I prefer leaning or sitting up and rocking, chanting and moaning, and observing the sensations and my progress.