I do agree that H9 fell short on directions amongst other things...including the number of aircraft provided...As for what the flight sim does...It works well. It is great to teach orientation and how to effectively fly an RC aircraft. I’m not sure you can expect much more than that. Yes it is good to help with hovering, torque rolling and other 3d / pattern flying. Mostly it helps get the orientation down and then you can apply at the field. I have a 24" wide panel monitor and it still does not give the panoramic view or feel that you get at the air field. The point I am making about FSOne is its basic flight model cant be beat. Planes do what they do at the field...I don’t think the other sims accurately reproduce the flight characteristics as FSOne. When you harrier a plane on FSOne it does not spin out of control as it does on other. Spins are accurate as well as other maneuvers....but...how do you customize the sim or add other aircraft.