When it comes to goal setting, how do you decide which system to use?

I am looking to invest in a goal setting program and because there are so many, I can't decide which one would be best. I've heard good things about Brian Tracys books, some expensive stuff from some other guys and I seen a video on you tube that I was wondering if anyone has any reviews about. The you tube video is http://www.youtube.com/watch?v=w9uOPooIRI4 I'm really interested to hear your thoughts, especially if you have used this system. Is it good for goal setting in general or not? Thanks