I'm not a fan of PP, but I think his methods really are geared for beginners; thus the super long intros on all of the dvds, blah, blah, blah...For "NH" trainers, I prefer Clinton Anderson, and Chris Cox, as they are short to the point...they don't give alot of mumbo jumbo about undertanding your horse's brain, and whether he's an 'introvert or extrovert'...I'm sorry but a horse is a horse, no need to put human psychology terms to them.
I think there is one major thing that Cesar relays well, too, and that is to be a calm assertive owner...I have trained and groomed dogs for well over 15 years, and I can tell you this is the most important peice of handling a dog; keep your calm, but make sure you are a 'leader' your dog will respect. I have few problems handling most types of dogs, even aggressive ones, as a groomer/trainer, because I take a no nonsensical type of attitude, but am not aggressive about it. Many of my dogs will stand on the table and be groomed without a grooming loop, where the same dogs will dance around, and try to jump off for another groomer.
"The ideal horseman has the courage of a lion, the patience of a saint, and the hands of a woman..."