Hi!
The Futaba radio is going to suit you fine for many years!
It will fly all planes on the market...from small electric models to sailplanes and pylonracers and scale airplanes.
As has been said before the only thing you (ever) need is: model memory, travel adjustment (EPA in Futaba lanquage??), sub trim and automatic trim memory...that's the most vital things to have in a radio.
I never use exponential, nearly ever use dual rates (but for 3D hovering) and never ever use mixing.....only been flying for 30 years. The last 25 using JR radios ( JR 388S since 1994).
Both Futaba and JR are the preferred radios among competition pilots round the world. They both have shown exceptional performance trough the years..I would avoid getting a Hitech radio as I have seen too many strange things happen to both Hitech transmitters and recievers during the years (servos good though).

Regards!
Jan K
Sweden