I took the 7-day immersion course of Veritas Prep. First I was impressed by the quality of the materials and the excellent customer service - I was dealing with Jenny Tang. In-class was even better. Ethan Todras-Whitehill, the instructor was amazing. He demonstrated uncommon expertise in all the subjects, teaching highly effective and timesaving strategies that cut the stress out of very tough questions. I left class with a deeper understanding of the materials and a broader perspective of what to expect in the actual test. I am even told they are not done with me until I have obtained my desired score on the live test. Of course, I will take Ethan and Veritas prep up on this. I have a high for the immersion experience and I would recommend Veritas Prep and in particular Ethan to anyone seriously thinking of scoring high on the GMAT.