Great Tool for Quants and SC

I took the GMAT official test in June and scored a 430 (Q42 V 10). Post which, I signed up on TTP. TTP really helps you nail down the concepts. I found it incredibly useful for Quants and SC. Quant especially is really detailed and covers nearly everything necessary to get a high score. What I loved about the SC module was that the explanation of wrong answers was really detailed. Going through their set of questions and the explanations will make sure you know the 1000's ways a sentence can go wrong. I retook the GMAT last week and scored a 660 (Q47 V34), and a lot of the success is attributed to TTP. I like the kindle like notes making feature and the error log. The revision was easy peasy thanks to those features.