If you go with any other study system besides HOCK, then you are wasting your money and time. The HOCK materials are very good for someone who has been out of school for a while and does not have a lot of time. The other program that I used before I bought HOCK had more materials and questions overall, but it was not nearly as complete for the exam. HOCK is more focused on what is needed to pass the exam, so if you are busy and don’t have time to waste, then go with HOCK. Be one and done.