Hey guys, though I didn't destroy this test, I got a lot from this forum, and want to contribute what I could.
First, I started studying for this test over a year ago. I spent a few weeks intensely studying the OG 9th Ed. (this is a few years old, now they're up to 11th Ed.) which I found in a library. I then stopped studying for a time, until about 3 months ago. I started again by redoing everything in OG 9th Ed.
I found Sentence Correction to be my weakness. I focussed intently on sentence correction, until I understood nearly all SC in the OG. Then I took the GMATPrep test, and scored a 760. While I was surprised and happy with the score, much of the verbal seemed familiar (from OG 9th Ed.), while the math was of a breed I had never encountered before. I tried a few paper tests and scored about the same, although the math on the paper tests was different (and easier) than the math on the GMATPrep software.
I needed some hard math, so following advice gleaned from several threads on this forum, decided Kaplan was my best route. I bought the GRE/GMAT math review, and the 2007 premier program book. Kaplan's math was harder than the math in the OG, and closer to the math on the GMATprep - and it was kicking my butt. That worried me, but I knew I was getting good practice.
What else worried me is that my Kaplan scores were much lower than my other scores, so I went onto the "Practice Vs. Real GMAT scores" thread, and made a small database of practice vs. actuals scores. (should be attached) I found that on average, those who scored above a 740 or so, average about 120 points lower on their Kaplan scores than their actual score. That helped me avoid discouragement.
While doing the kaplan, I became obsessed over counting and permutations problems, and spent several hours purusing several different websites on the subject. Unnecessary. You will probably get only 1, maybe 2 such questions on the test, and they are very concept and not formula focussed. Overall, I averaged about a 650 on all the Kap tests. I took the GMAT prep again about a week before the actual test and scored a 760.
No improvement over my initial score, however, I was infinately more confident however. From scanning the scores in the above mentioned "Practice Vs. Real GMAT scores", I saw a lot of people who did well in practice, but poor by comparison on the real test. I chalked it up to test anxiety, and realized test anxiety was my probably my #1 pitfall to avoid on test day. Secondly, I knew from my practice tests that math was far more likely to put me into panic mode than verbal. Panic mode majorly interferes with the sort of higher level thinking you're being tested on during the test, be conscious of this and remain calm at all times.
On test day, I focussed hard on staying calm during the math section, giving up and guessing when i had to instead of letting my mind race one last time to try and force a solution. I forced myself to write neatly and clearly on the scratch paper, instead of quickly scribbling and jotting as I'd often done.
While I didn't destroy the math, I got a 49, where I expected either a 47, 48, or 49.
Since verbal was my strength, I wasn't very anxious with that section. I finished with several minutes left, but must have moved too quickly over a few. I hadn't gotten below a 45 on the verbal in any of the practice tests, so that was a dissapointment.
So that is that. A shameful debreifing given some of the posts I've read, but hopefully some help for someone out there.