Rollo - he's not being asked to give up anything OR buy a $1000 radio. I recommended a system or 2 in the $300-$320 range. True that additional RX's are $100 but an R168DF is $73 with a crystal. And IMO you get a lot more with the 2.4 radio. I also never said the sky was falling on 72 MHz. It WILL be around for some time but he might as well plan ahead now rather than later.
If you want to stay with what you have, FINE. I have no problem with that but we are not talking about YOU here, now are we?