JR X6102!!
It is everything you will need for a very VERY long time!
Many mixing options, dual rates on three channels, exponentials, 10 models memory and other cool features like digital sub trim, travel percentages, choice of stick modes, choice of wing setup, throttle cut button, training mode, and many others to count

You can use it for helicopters as well as many fancy plane wing setups from Elevon, to Flaperons and V-Tail, plus landing gear and seperate real flaps if so equipped.
It transmits in FM or SPCM as well, has a fail safe setting, and a timer so keep track of your flying time!

I bought that radio with my trainer, I am keeping everything installed on the trainer for now and I am buying the same servos, receiver and battery to install on my second plane.
I will still be able to fly both :P