We are an 8-year old GMAT training company with trainers who have over 15+ years experience. We have successfully trained students to get as high as 780 with an average of 50+% students getting a GMAT score above 700 (~88 percentile) (y-o-y).
There are students on GMAT club who have recommended us for a score improvement from 610 to 760. For more of our reviews, please check out the testimonials on GMAT Insight.