This is my professional opinion on XP10.Let me start by saying I am an ATP CFI, MEI, CFII and currently fly as a captain on corporate jets.The best way for me to compare it to what it can be is compare it to a full motion simulator we do our training every 6 months in. FSX is nowhere near the feel or aerodynamics as a level D sim (taking away the motion of course).X-plane gets really close. The fact that you can play with the weather to make it exactly how you want it is a huge plus. Also, the failures, from engine failures at certain speeds or times, to inadvertent TR deployments. The cross wind landings are way more like real life in X-plane 9, 10 than in FSX. Yes, FSX is more intuitive, and the interface is more friendly, but X-plane has what it takes if you are looking for a trainer.BTW, if you are looking for a good business jet that is aerodynamically pretty realistic then look no farther than Jason Chandlers Lear-25. C72.net i think it is.Anyways, that is my opinion.Thanks