I know this is a loaded question but I would like some opinions, Which FS version gives the most realistic helicopter flight model? I am leaning toward FS2002. It seems to me there was an editor called AirEd or something similar with which you could tweak the helicopter air file (in notepad) and make it fly even more realistically. I've been away from the simulators for a while but I am getting the itch again. I started with FS98 and layed off with FS9. I lost interest after the MS started devoting more efforts toward eye candy than realistic flight models. The helicopter in FS 2004 and later were easier to fly but certainly not realistic. The later versions won't even autorotate properly with the collective reduced to minimum.