Haha, apparently I've already garnered quite a reputation for being a liar on this thread! Sorry, it didn't notify me in my email that people had replied. So here's a better breakdown:
I downloaded the free GMAT software, and took one of the free tests right away. I scored 730, but then I realized I had screwed up, because I thought I was allowed to use a calculator on the math section, but I did very well on the verbal and felt comfortable with the essays, although of course I didn't know how I'd be scored on the AWA. But in terms of the math/verbal, I knew I wanted to focus on math.
So I spent some time reading GMAT book reviews, and came across
the Official Guide as the standard that everyone needed. I also wanted additional help for the math portion, and several people on amazon said how the book was lacking for the verbal part, but the math is great. So I knew going into it that is the only part I would use it for. I also picked up the Princeton Review Cracking the GMAT, but I mentioned NOVA because their math help was a major difference maker (in fact, I sent an email to them to thank them after I took the test).
I waited, didn't study anymore until the books got here, then started 2 weeks of intense studying. I did all the math questions in
the Official Guide, and supplemented with the NOVA book. Really, I never used NOVA for anything but math, again because everyone said it was weak in the other areas. But a big part is that I am a compulsive email checker, and every day there would be a question sent to my inbox, getting my mind back into that mode early in the morning.
Then, a few days before the test, I was taking the second free practice test from the GMAT download software, and in the middle of my taking the test in my apartment, I get a call from the test center saying they were closing on the day I was scheduled and I would have to reschedule for a week later (could the timing have been any worse?). But I finished the 2nd practice test, and scored 750. So I knew I could do well.
On test day, I felt like I either knew the answers to the questions, or had absolutely no idea. Which was nice, because 50/50 can be frustrating. And I wound up scoring a 760.
Thanks for likening me with a diety trahul, but I think I've found way too many people in the 750+ range on these boards to believe it's anything special.
So that's why I recommend NOVA. I am not spamming, and though they did respond to my email saying they were happy to hear I scored well, they did not ask me to promote their book or do anything for them. It's a good book for math. That's all I used it for, and I heard the verbal prep was not good. Any more clarifying I can do would be fine.