This is from the Futaba side of the argument. I would suggest the 9CAPS as a good start. You can get them used now at a very reasonable price. Frequency modules are also reasonable, but not as inexpensive as a receiver xtal. On the other had, if you get a sinthized TX module, you can change frequencies by simply dialing in the new frequency. That takes care of the 72mhyz band. If you decide later that you really need the 2.4ghz, you can plug the 2.4ghz Frequency Module in. If I were buying a new set now, I would go with the Futaba 10C. It comes with the 2.4 ghz module but the same 9C 72mhz modules work also, so your pool of receivers isn't scrapped. Personaly, I see no need to suffer the expense of converting everything to 2.4ghz, but if you are starting new, it might be worth the price.

I suggest the 9 chanels, not because you will use them, but because the computer mix options are greater. It gives you a lot more flexability that the 7C for instance.

Don