I took the exam a few days ago, got 720. I bought 4 books from Amazon to help me study. Which are "Insider's", "Kaplan 800", "Crash Course" and this one. Since "Crash Course" is designed for last-minute review so let's count it out. Of other 3 books, "Cracking the GMAT" is the worst. It tends to make things too complicated and its sample questions are not well-designed. Not to mention the CD that comes with the book is [bad]. You can easily tell that Princeton Review didn't pay much attention to make this book a good one. Since if you fail to get a high score from reviewing with this book yourself, you end up register their more expensive taught courses.So, anyone wants to get a good score at GMAT, here is my sequence: Insider's (read it all) --> Kaplan 800 (the CD is really great, comapring to Cracking's) --> Princeton Review (only practice the questions) Trust me! I just spent 1 month with an average study time of less than 3 hours a day. And I got 720!...