keeping aside that feibel copy Dayton and the type of vendor he is, he is a far better teacher/trainer than Dayton. in every aspect. Dayton may have more knowledge than feibel but does not teach in a lucid and easy manner. dayton does not come out with clarity which feibel has in his explaination.
here it's very easy to compare as the material is the same and more or less the same format. be it UT/spring/chart reading mastery or any other course.