I was very satisfied with Orion. The platform is great and it is administered expertly. I really don't have anything bad to say about Orion. Initially, I underestimated the difficulty of the GMAT and when it came to preparation--well, I procrastinated. A few different practice tests predicted a score between 450-480 (embarrassing right?). As a husband with a full time job whose been away from academia for a while, I liked that I could start and stop my prep work seamlessly. After a few months of working through Orion's program, an hour or two at a time for a few months, I scored a 660. I know that's not a jaw-dropping number; however, I'm not looking to get into an Ivy League school (but I wouldn't be getting accepted anywhere with a 450). That said, after taking the actual exam--if i had higher aspirations--I'm sure I could score in the 700's with another month or so of study. Much thanks to the folks at Orion.