The MGMAT course was fantastic. It was very well organized and extremely well taught. My instructor was very knowledgable and personable. The online materials were some of the best I have ever seen, and the instruction books are very thorough. I could not have done well on this test without studying the lessons specific to each question/content type and the practical test taking tips from MGMAT!

I have to say that taking this course was the best thing I did in starting my prep for the GMAT. I was under a time crunch as I started my course in Feb to meet the June 2012 format change. The books and website material provide great deep-dives into each topic area and there are enough questions and practice exams to keep you occupied for months. Avi Gutman was a great instructor, really knowledgeable about the material and always followed up on items he was not immediately able to answer. After the 9 week course was over, he was also available via phone and email for questions that came up.

When I did the re-write I took advantage of the Post-Exam-Assessment and spent an hour on the phone with Brett Beach-Kimball hammering out a 1 month prep strategy for my re-write. Also, since I re-wrote in July and had to deal with IR, I found Stacey Koprince's blog posts and the BTG online workshops on IR an invaluable resource in learning the question types and prompts. Thank You to Manhattan GMAT for all your help. Keep up the good work!

I have written a more in-depth post about my preparation for my 2nd attempt at the GMAT and you can find this here:

http://www.beatthegmat.com/680-to-710-in-30-days-focus-on-your-faults-and-find-success-t115829.html

I purchased private tutoring from Manhattan GMAT and was paired with Brett Beach-Kimball. Before engaging in online tutoring I had attempted to study on my own and was stuck hovering around the 640 mark. After 8 hours of tutoring from Brett, I took the GMAT and scored a 730. I found the online classroom easy to use and navigate. I must admit, I was skeptical at first as I am very much not a computer guy, but the forum worked well. Brett's strongest attribute as a teacher is his ability to explain problems in multiple ways. Whenever I would have difficulty with a particular problem or concept, Brett would ask me to talk him through my thought process on tackling the problem. Brett made his recommendation on how to approach similar problems in the future based on my thinking and learning style, and did not try to force a "single solution" model on me, which was quite beneficial.
Brett and I also worked together to create a solid game plan for the month leading up to the GMAT. His recommendations were spot on and enabled me to perform at my peak on test day.
The out of session work assigned by Brett on a weekly basis proved invaluable at preparing me for test day. When we started together I was having to rush through the last 7 or 8 questions on the quantitative section. On test day I was able to finish to quantitative section with ten minutes to spare.
It is important to note that in order to maximize time and money (as the tutoring is pricey, but well worth it) you must spend ample time in between tutoring sessions to practice sets and drills. Brett and I met every Monday night for two hours. Between sessions, I usually studied for at least an hour on weeknights and 3 hours on week ends.
Brett is a true professional. I would recommend him to anyone seriously looking to improve their GMAT score and is willing to put in the extra time to do so.

Rigorous, thorough preparation. No short cuts, but it will definitely prepare you for the exam--especially if you are willing to put in the work. Your score will definitely show significant improvement--again if you do the work. And that's the way it should be.

My instructor, Hemanth, was very good, had very thorough knowledge of the exam and had apparently been teaching the prep course for a long time. Additionally and perhaps most importantly, he was sincerely concerned with our success as students and is a full-time school teacher for his day job (obviously good training for teaching a prep class).

Manhattan GMAT also has great resources for taking practices exams--which probably cannot be emphasized too much--giving you as close to the real experience as possible--and up to like 6 times.

Let's see...Manhattan also has very good online resources. I'm sure their website can describe it better than me.

Their study guides are very thorough, more thorough than the Kaplan guides I've seen. When you sign up for the class, they mail you a box full of study guides--and you are expected to go through approx. 3/4 of them.

If you're serious about a good score and willing to put in some work take Manhattan--just my personal opinion and experience.