I use natural horsemanship as well. Parelli teaches you a lot about why horses do what they do, and how to connect with them on a deep emotional level. I really like it. I think that they are the only ones who have made an incredible at-home study program. Their tools and dvds are a bit expensive, but in my opinion they are well worth it. I havent searched much because Parelli has worked so well for me, so I don't know much about other natural methods, but good horsemanship is good horsemanship.