I'm still using 72 Mhz and it works fine. And I'm also a big fan of pre-owned planes and engines - if you're careful you can get good deals. And everyone is dumping FM, so you can get receivers and radios cheap. And most of the time I"m the only one at the field still on 72, so no chance of interference. On the other hand, I AM the only one at the field on FM (which occasionally prompts some of the older, opinionated gents to ask "why?".) I haven't converted due to cost - I have about 20 planes now, and am on a limited budget. Though have heard good things about the "Orange" series of 2.4 receivers on Hobby King. So - 72 works and is affordable for a newbie, but the longer you're in this hobby the more planes you'll own and the more expensive the conversion to 2.4, when you DO convert.