Best Preparation Material for a 700+ Score

I had never tried the GMAT Club questions before but as I go access to the material with my Egmat course, I was able to utilize the materials and sources here as well. ITs some of the best preparation material I have come across especially the kind of questions that are presented here can prepare you for any kind of GMAT type question. Many a times one is taken by surprise on how even a simple question can be made difficult just because there is some small detail in the logic that you have missed. I think to ensure that you are not taken by surprise and so that you don't waste too much time on such questions in the actual test, it is best to actually do these questions even if not in the CAT format. Just going through their database will prepare you a lot more than any other source that is available online.