You didn't "fail" on your second attempt. Your real test score was right in line with your practice test scores. All standardized tests have standard deviations; your real score is within one standard deviation of your practice test scores for both MGMAT and Kaplan. I know you might not consider that good news, but it's important to know where you stand so that you can make the best decisions about how to move forward.
What does that mean? It means that there's work to be done in order to improve your actual test-taking ability; it isn't a matter of under-performing on test day. (Though it does seem like that was the case on your first real test.)
A question for you. Is your goal really just "700 or higher"? If so, you're already there. I know you have a 6 and the start of your score and not a 7, but there is almost no statistical difference between a 690 and a 700 on this test. The real test has a standard deviation of nearly 30 points.
There's no school that will reject you for lacking just 10 points. (They may reject you for other reasons, of course, but they won't look at your full application and say, "Oh! So close! If only the score were 10 points higher...")
If, on the other hand, you're really looking for a 720-730+, now we're talking about a more significant difference. So, which is it? (And take this question seriously. Obviously, everyone would take any kind of higher score, but do you actually need it for your desired schools?)
Finally, if you do actually want to push for a statistically significantly higher score, then you aren't necessarily done with the materials that you've already studied. From your two numbered questions, it sounds like you're mostly just looking for new problems. But we don't learn much just from doing new problems, and we aren't much better when trying new problems unless we have
already learned something new before we try them.
To get an idea of what I mean, and of the kind of analyses we need to do when studying practice problems, read this article:
http://www.beatthegmat.com/mba/2010/09/ ... t-problemsI can advise you better once I know what you really need here, so let me know on the above. If you do want to go for a 720+, then use the following article to analyze your most recent MGMAT CAT, then come here to share your analysis with us:
http://www.manhattangmat.com/articles/e ... -part1.cfmWe'll help you figure out where to go from there!