I have RF G3 and upgraded to G3.5 and I love it. I have flown the hangar 9 version and it does not seem like RC planes to me, G3 to me flys more like real life RC planes. Hangar 9 does have a whole lot better graphics and yes you will need to upgraded your computer too. If you bought one I would get FS1 by hangar 9 or RF g3 or g4.