I have RF 3.5 which works great but the problem I have with it is it's hard to see the planes. They're much smaller on the screen than in real life which is why I think flying a real plane is easier. Plus I'm bored with all the planes. Is there a way to add more planes without buying the expensive add-ons? By the way, you want to have some fun? Change the engine on the ultra sport to a turbine and fly it that way. Crazy fast!