Having used different resources, I do have to say that Orion was totally worth it and that it very much helped me to get to the 760 Q50/V44 score that I got. The thing I loved the most about Orion was that it really challenged me at the highest level in every topic. Undoubtedly Orion's hard problems are harder than GMAT's problems, but they still keep very relevant! If you can handle Orion, you can handle anything! Just don't get discouraged with your CAT's results! I got 690/710/690 on Orion and when I then took the official GMAC tests I got 750-770.
