Hi,
I agree with Welsh 3d...get a glens 30% cap, they 3D soooo well, (speak from personal experience).
As for realflight, i have yet to see a aircraft in the sim to fly as well as a 30% (or bigger) model. The ultimate perso is just silly, what i tend to do is use the cap 232 x2 modified slightly to make it harder to torque roll.

To stop model tip stalling in realflight, get the wing loading under 14oz/ft (or whatever the unit is...the magic number is around 14!).

Happy Flying