I have used AD Banker for my SIE, series 63 and series 6. I thought the courses for the SIE and the series 63 were both very similar to the actual test and helped me prepared accordingly. However, the series 6 course has not been the same, I have taken the course now twice and each time my actual test has been vastly different than the course materials and the practice exams. There also seems to be some technical difficulties when it comes to the comprehensive exam grades, each time I take a comprehensive exam I have to back out of it, and then go back to the course to see my grade, rather than the course providing the grade once I'm complete.