The benefit to you bryris is that you can pick up great 72Mhz Rx's for cheap now. There is nothing wrong with them and another benefit of all of these guys at the field going 2.4 is that it opens up the 72 Mhz spectrum for you. This is another reason I like the modular radios. The 9C may look long in the tooth, but the modularity is excellent. I go back and forth between 2.4 and 72 for reasons such as FPV and other things.
Curtis