It all depends on YOU! If you are in the hobby to stay, and you even think you MIGHT get into giant scale or warbirds, then I would definitely recommend something like a Futaba 7C or 9C. It is real easy to use up the channels, and it's nice not to have to use Y's for multiple servos.

I think 2.4 GHz is over rated at the moment, especially if you fly at a club. Unless it's a REALLY large club, there's bound to be open frequencies available. Just check it out before you purchase the transmitter. Crystals are cheap if you already have a few receivers. The only reason that I would specifically get a spread spectrum radio is if you fly in a 'public' area where there's no established club. You may get interference from another flier.

I can't recommend a Futaba 6EX. I have a 72MHz version that I quickly outgrew. It has very limited programming. I've looked at the 2.4GHz version and it's similar to mine. For example, there is only one switch for dual rates, meaning that every channel that you want to have dual rates set for is controlled by that one switch. No choice. Either all are low, or all are high.

Right now I have a Futaba 9CAPS and I can't see needing anything else for a LONG time!

Just my 2 cents

Kerry