First, I completely agree with the lady from Wiltshire England (her review of this book).
Although I have not yet been able to do a complete read of this book, I have gone through the dental, farrier, and saddle sections a few times. I looked at the Orthoflex saddles on-line and found they look very unusual. Although they may be a good alternative for the horse, what happened to the riders part of the equation.
More importantly, I am very disheartened by the dental and farrier sections. It seems despite how hard you try to take care of your horse, you aren't doing enough. If the professionals do not do their job properly, who can you really trust? I feel lucky to be able to get any farrier or vet to come out to my rural area and I honestly could not tell you if these professionals are doing as good a job as they promise me they are. I read extensively, but reading cannot replace the professional experience that both of these practitioners should have. I truly feel overwhelmed and depressed about riding every time I read through this book. I love my horses and riding is my therapy, but when I read this book I feel like an abusive monster for wanting to "use" my horse.
However, there was very interesting information in the book so overall I rate it higher than if I were just to rate my personal feelings about it.