No disrespect meant to anyone that's been mentioned in this thread but people just seem to like to say that they got their aerobatic/spin instruction from "the best their is." To my knowledge, there are only two people teaching today that are in the aerobatic hall of fame for their contributions to aerobatic training, safety, and contest flying - Bill Finagin and Debby Rihn-Harvey. That to me would indicate a widely acknowledged acceptance of "the best there is." There's obviously nothing wrong with the training a great many instructors offer and the sport flying world is a better place because they're around and committed to teaching. For most pilots that's good enough by a mile. But if you really want to say you learned from "the best" then why not seek out "the best?"