I have both Realflight G2 and FMS. Realflight defiantly more realistic, FMS is good for co-ordinating left/right when flying. I was using my transmitter with Realflight and letting my 3 kids learn/play 5,5 and 6. Of course always very nervous about them breaking my expensive transmitter. Then someone suggested I buy a Logitech Wingman rumble pad. It is more sensitive then my transmitter, but great since I can let the kids play, with out me having a heart attack every time 8-). I use it now with both FMS and RealFlight. I would download FMS, buy the rumble pad. Then if you really get into buy Realflight G2 or I have heard AeroFly Pro is also really good.