TTP - the most comprehensive for Quant

I took the GMAT twice, scoring a 640 (42Q) and a 670 (45Q) respectively. I had used other GMAT prep materials and studied for 6 months but still felt overwhelmed on the Quant section. I felt like I had a good base in quant but needed something to push me to a top score. Luckily, I was recommended TTP. I cannot state how comprehensive that site is! I dedicated a couple of months to review each chapter, take the practice quizzes, and take their longer exams. Come test day I honestly felt like I had seen every problem the GMAT threw at me. If you really dig into their materials, no question should come as a surprise. It is such a comforting feeling when taking the test. I ended up scoring a 49Q the next two times I took the exam. Finally, finished a few days ago with a 740!