I finally took the GMAT on Friday and scored a 710 (Q47 V40). I prepared as thoroughly as I could've. I did almost all of the OG, 3 Kaplan
tests (600, 610 & 640), 1 PR (730) and 4 Manhattan GMAT
tests (all around 680-720) over a 2 month period. I was surprised at my score, since I was really nervous and not very clear minded during the exam. The math questions I bought from this site were very helpful esp. for the Combinations and probability questions. I highly recommend purchasing the Manhattan GMAT
CAT CD. It contains 8 GMAT practice exams which were very close to the real thing. I know I could do better if I re-take the exam, since I will be less nervous. However, I am just glad it's over and want to now focus on the application process.
I wanted to thank this Club for all the support. I never posted any messages, but reading all the dialogue was very helpful and supportive to know that others are going through the same thing. I wish you all the best in your quest for a high GMAT score. My strongest advice for the test day is try and relax as much as possible. Good luck!