Hello,
One month ago I took GRE and scored 720 Quantitative. I was very concerned. I knew that this is not my potential.After one moth, I took GRE again and I scored 800 Quantitative. I just wanted to advice you that believe in yourself to get higher scores. For second time, I did not spend too much time in first 15 questions. I just solved the question and clicked next so that I was able to solve all the questions. ANother advice is be calm. Do not make yourself believe that this is hard exam and the question you see is a hard one. They are all average questions. Be confident that you can do all of them after practice.After studying various kinds of materials, I can say that only powerprep have questions similar to GRE. You can also count on Bigbook for practice and help you manage your time. If you have no time for studying, just use Powerprep. Be calm during the exam and think positively. I hope you all good luck and I wish we get acceptence for all the programs we aim. Happy New Year.