I've always loved the challenge of gmat style problems, but found it hard to study for extended periods of time. With Orion that is not the case, I just want to keep going. I think that the videos are to the point and really good at showing how to solve problems that might have taken longer without those useful tips. Also, the ratio of "theoretical" video lessons and practice drills is excellent. Additionally, the customer support team are quick to answer questions and open to suggestions to keep adding features and keep improving Orion. Highly recommended, 10/10!