I suspect many people felt that way when wax cylinders were replaced by vinyl records, and those by reel to reel/eight track/cassette tapes, and those by compact disks. Many people said the same thing when it was suggested they upgrade from black and white TV's to colour to plasma/LCD screens, or VHS cassettes to DVD and now to BluRay. How about analogue cellphones to digital ones? Windows 3 to Windows 95 to Windows XP to Windows Vista? In all these cases - as with the move to 2.4ghz - there were those who saw the benefits and jumped, and those who clung to the old ways until forced by circumstance to make the change. From my point of view it only takes one model to be shot down by someone else turning on a radio or by some other miscreant signal to make the purchase of 2.4ghz equipment a financial winner. Sure, there's likely to be new and exotic problems with 2.4ghz that we've not yet found but from what I can see they're much fewer and rarer than the problems that occur with the older technology. If I didn't already have a 2.4ghz system I'd be scrambling to update to one, starting with my most expensive/treasured models. If nothing else, the fact that you only need one transmitter and don't have to change crystals and settings for every plane is enough for me.