There is a thread in the clubhouse about this right now. A flight pack (all the electronics of the plane like receiver, battery, servos etc) cost almost exactly the same as an entry 4 channel radio with flight pack (Hitec Laser 4, etc). A computerized radio doesnt help you much right now with the trainer but once you advance past your trainer you will want a new plane anyway and then start to use the features of the computerized radio.

So why not by the entry level radio and then for your next plane and buy the computerized radio on the same channel and you will be able to fly your trainer and your new plane with the computer radio.

Money wise you come out the same and with a more basic radio you dont have to worry about extra switches and such that can be confusing at first.