Has anyone ever heard of or tried the Retriever Fever training? What are the up's and downs of Dustins training program? I liked the idea that he walks you through JH to MH tests. (I want to be able to train a pup up to the MH level.) Retriever Fever is about half the price of Lardy's. So, what do you guy's think? Lardy's or Retriever Fever?