MGAT is the way to go

The Manhattan GMAT course is flawless. The layout of the course and the books really help you understand many of the intricate details of the GMAT. The course is fun, efficient and effective. The strategy guides give great practice problems and general guidance in each topic. Then the OG archer and Advanced Quant really prepare you to score high on the exam. I HIGHLY recommend following the Error log procedure. This was the key to my success!
Even if I got the problem right, I used the error log to find a quicker way to the solution, which really helped boost up my score. (If you don't know what is wrong in that sentence, read the sentence correction strategy guide!)

I increased my score from a 610 to a 730 is 5 months. Stanford here I come!!