Have you used all of, or any of these compounds? I wouldn't say any have a significant fat burning effect. Do they give some aid in burning fat, yes in some, maybe. But the average Joe would most likely not notice any benefit if he did not already have a very low bf%. My personal experience and those around me that have used the compounds you listed didn't burn any noticeable fat. And the people I work with are bringing their bodies to an extremely low BF for competition.