Get the full version. I dont think you can use on any of the add-on Cds which gives you alot more helis and flying fields at a later date. I also dont think you can change many (if any) of the heli flying characteristics which allows you to try and reconfigure a stock heli to one that starts to feel like your own heli. This gets quite important as when you start using the sim a lot, you want it to try and react as if it was your own up in the sky. It is never perfect but you can certainly get quite close. You also get a lot more helis and planes on the full version.