If I flew at a club on Sundays, I would use 2.4 Ghz. But I fly in a isolated area with one or two other guys and we all use only 72 Mhz.

So if you fly with a bunch of guys around, you owe it to yourself to use 2.4 Ghz. If you've ever been shot down by someone clicking on a transmitter on the same frequency for a second, you will convert to 2.4 Ghz