I turned to Zoltan after my first attempt with the GMAT in order to strengthen my Quant score. I learned so much from him compared with my self-study mode aided by prep course materials. He really knows the ins and outs of the GMAT and how test-makers think, and he has an endless range of resources to help you to develop in whichever section. With Zoltan’s help, I managed to improve my overall score significantly.