RE: transission to 2.4 Ghz
Thanks for the all the input.
I didn't know that the 2.4 Ghz system is not standardized between brands. That's not good for business in the long run.
I just noticed something that I overlooked previously about Hitec. They have not even come out with a 2.4 Ghz radio yet. I guess that means that they will be producing their FM radios for quite a while still. Since I'm thinking I'll just stick with Hitec, then that looks good for me. I don't need to rush with getting a new radio. The six and seven channel FM models should definately still be available as-new several months from now.
As for eventually changing to 2.4 Ghz, as long as the old servos are compatible, then I'm not overly concerned about the cost. And as stated here, one can gradually replace the old RX's with new ones while using both radios in the transission.