the only experience I have with sims is the one that came with the nexstar. About the only thing it was good for was seeing how the plane reacts when inverted. I spent about a total of an hour on that thing. It oversimplified take-offs and you really had no sense of where the ground was when landing. now if your practicing 3D a good sim might help you out. But for general sport flying I wont buy one. They just dont seem real to me. Kinda like being book smart compared to trained on the job.