I was tageting 700+ and am happy with the result.
Preparation: OG11 ( most similar to actual test) , GMAC practice tests ( Quant is much tougher than the actual exam), Kaplan and Princeton Review.
Assorted verbal discussions and uploads on testmagic.
I started preparing from the first of Feb 08 . Practiced with OG11 questions and strategies from Princeton initially. Then started on practice tests and read thru Kaplan strategies. Reviewing all tests for mistakes was critical .
I started with the AWA templates in Princeton and developed some standard opening and closing options which helped.
Test: The procedures are a bit ridiculous with the fingerprints for every break you take and the staff wasn't particularly friendly but other than that the markers, ear plugs , ambience etc were all non issues.
Taking the breaks and eating between the sections is very helpful to regain eqvilibrium and focus on each section separately. I got a couple of bananas and an energy drink and forced myself to eat and drink during breaks even though I was not hungry.
I'm looking forward to some off time before the application madness starts again.
And, Good luck !
PS:I'm looking at MBA programs in and around the Dallas - FortWorth area .Do ping me if interested in discussing DFW area MBA options .