I signed up for the Zahn program upon the recommendation of my colleague and now I've already recommended it to other colleagues. It was the single best decision I could have made in preparing for the exam! I've done other live prep courses for my series 7 and 66 through other test prep companies but this was the best one by a landslide. They know what they're doing. Tim, our instructor was fantastic. He broke down concepts and explained things so well. As an added bonus, in addition to thoroughly prepping us for the exam, I actually learned a lot of useful, relevant information that is important to my job! (Who would have thought?!) :-) Needless to say, I feel completed satisfied with the high quality of this program and recommend it to any future test takers!