I only have the R22, so can't comment on the others on your list. What I will say about the R22 is that it's a basic helicopter, very basic - no frills, no auto-stabilisation or yaw damping - so it's quite a handful to fly. Even a seasoned xplane heli pilot will find the R22 very twitchy (apparently realistically so) and almost unpleasant to fly. If the real thing is such a nightmare, it explains why just about every helicopter pilot out there can't get off R22's fast enough. Dreamfoil's R22 is accurately-modelled inside and out, with circuit-breakers modelled and useable, rotor brake useable, access panels operable. As said, if you're already experienced flying helicopters in xplane....... it won't help you with the R22 - you'll be learning from scratch all over with this one. If you're looking for something to get in and fly, the R22 isn't for you. The first few weeks you'll do nothing but crash. It is hard work, but so rewarding once you get the hang of it.