I use Clinton Anderson's groundwork methods, haven't spent much time looking at his riding methods. All have worked very well for me. I'm going to his clinic this summer, I'm pretty excited. He is also the most honest of the bunch, in my opinion. It's just a matter of using your head. Don't push your horse too hard. Realize every horse is different and will respond differently to the methods. I really dislike parelli. He's not a good teacher, and I've seen him get really heavy handed. I'm definitely not saying Clinton is perfect, but I really prefer his methods over parelli.