A lot of people say they will "use what works"-- but this doesn't mean much more than that they are satisfied with what's happening at the moment. There isn't any single "what works."
Whatever method you start with, keep your goal in focus. If what you want is a companion, you will proceed differently than if you want a winning competition horse. You could end up with both
but you will still have different priorities as you school your horse. (I'd be interested in how you proceed, Spirithorse, with blending in Dressage. One thing I find missing with Parelli is sufficient attention to the horse's development.)
What I like about Parelli's approach is his emphasis on teaching people. I believe he has all these cute little gimmicks (like "Games") simply because they make sense to a lot of beginners. If you don't like this approach, try someone else. I've been much impressed with Parelli's instructors, especially David Lichman (CA). They have far more alternatives than you'd think, they don't follow a Parelli Menu or strict Parelli Rules. And they're horse people.
A million times better than a DVD!!!
Brannaman says things like, "Just be yourself"; what he means is, "Just be like me." That's not gonna happen. . . but you can still learn from some less student-friendly trainers, especially when they are as excellent with horses as Brannaman is. The main thing, as a beginner, is being able to understand your instructor.