ORIGINAL: jrcaster
$110 for the module, then $100 for the receiver
That's incorrect information. It's $110 for the module
and the receiver. If you're a Futaba flier, there's no cheaper way to get your feet wet with 2.4ghz.
phakur, do you have an 8U Super system? If so, then you have everything you need to make the most of your Ultrastick. I'm not sure if the vanilla 8U has the necessary "crow" programming, but I know that the Super does. The instructions for programming it should be in the back of your Ultrastick manual. They make it pretty easy.
If you want to try 2.4ghz, go for it. There's very little to lose. If you find at some point that you'd like to switch brands or stick to 72mhz, you'd have little trouble recouping your investment. Used AR7000 receivers go for about $75 to $80 on RCG, and move quickly. You could probably get $30-$40 for the Spektrum module. There's really no way to lose financially, which is pretty darn rare in this hobby!
What pushed me to Spektrum last year was the wide variety of receivers they have available, at price points that made the switch to 2.4ghz affordable for me. Futaba has a range of receivers that is almost as diverse, but their price points are higher. Airtronics is just starting, and has only one receiver available right now. Most of my planes are 4 or 5 channel models, so I've been putting Spektrum AR500s in them at a price of about $50. Those are the very best deal in 2.4ghz right now. My models that require more channels get more expensive receivers, and I'm never buying more features than I need. I like that!
You really can't lose with your line of thinking. Give it a shot!