I am a beginner and thought of using Heli-x to train a little before I buy a coaxial helicopter and start flying at home (indoors). So I downloaded the DF5 and tried to fly it with Heli-x 0.9. To my surprise it was really hard (please don't laugh!) to control. I have tried another coaxial helicopter on RealFlight and there I could just fly around and land exactly where I wanted. But with the DF5 on Heli-x I had difficulties just to hoover!
So now I wonder, what is closest to reality?
If the DF5 happens to be "worse", is there a better model for coaxial on newer versions of Heli-x? (The utilities in 4.1 seem really cool but I want to buy something I manage to use

Thanks in advance!
Wylliam