yeah, it probably wouldn't be worth it, because you at looking at 55 for the TX and about 60 to 70 for the 4 in 1, plus the body if that was important to you (not that big of a deal, basically just a different color, red instead of yellow)

The thing with the cx, you may get some interference somehow, but most of us RCer's still fly with the 72mhz systems, so it's not really that big of a deal.