I still have 72mhz radios also. I have been in the hobby for 29 years and remember what happened in 1991. I honestly think the swich to 2.4 by the AMA is going to happen sooner than people realize. I have already heard that some contests and fields are starting to ban 72mhz radios. In my opinion, within the next 3 yreas, AMA is going to ban all 72mhz radios from use. Sure there will still be people flying them, but it will be a " dont ask dont tell" type of thing. I hope I am wrong, but i do believe its coming fast.