I attended the in-person course, instructed by Ken T. from Irvine. It was a thorough course and Ken was an incredibly helpful instructor. He doesn't just go through the lessons in the books, he also adds in content full of other handy tricks and strategies. Also, he provides advice based on his experience with the GMAT. More importantly, he spends extra time and energy to ensure that all of his students understand the concepts, instead of rushing through all the material. In addition, he willingly stays after class and answers extra questions. Ken made sure that the money I spent on the course was well worth it.