99% but a GMAT ain't one

By far, hands down, the best GMAT prep course around. Interestingly, I heard about the course from a friend in Korea. My friend in KOREA had heard about Manhattan GMAT! So I tried the course and rocked the GMAT.

I took the 9-class course in the summer and studied with the Manhattan GMAT prep books. About a month after the class, I took the exam. The course is demanding, requiring solid 5 to 10 hours of studying a week, but it is definitely worth it. (Though, frankly, the course is made so that you can still keep up with the class if you hadn't done much outside studying... You will just feel really stupid in class).

Great teachers, great books and great on-site test simulation center.