TGM is great for a beginner or for someone who doesn't like to do a lot of planning on their own. I used it for both of my trip last year. However, I feel that I can do what he does on my own now and don't need his site. It really is useful, tells you when to make PS, gives park hours and other information pertaining to touring. I would use his services at least once. It will give valuable tips and information that you can use on the next trips you plan.