If cost is NOT an issue I would strongly suggest looking into the new Futaba 3PK that comes bundled with the HRS system. One HRS transmitter, One HRS RX and NO servos. You can only use digital servos with this system. But, it claims to be the FASTEST response system on the market today.
The other nice part about this radio, without the HRS module, you can use the FM Synth module by HiTec along with the Novak Synth RX's. So you can dial in your frequencies on the 75mHz FM band.
Mind you, the synthesized FM systems ARE NOT CHEAP! Its a matter of what you are willing to spend.
The Novak RX's, with a good deal, will run you 90 bucks each out the door. I have 5 of them already!!! Expensive, yes! The ability to just dial in to your frequency and not have to worry about crystals, PRICELESS!