What frequency bands ARFs are equipped with shouldn't be used to determine which plane you buy. The 72MHz AM, FM and FM/PCM radios have been around and worked well for decades. I personally have both AM and FM/PCM radios that I trust more than the new 2.4GHz units now on the market. What should be looked at is the size of the aircraft and where you plan on flying it. If you plan to fly in a large indoor area like a gym, go with the smaller plane. If you plan to fly outdoors, the bigger plane would be better as it will be easier to see and more likely able to handle light winds you will encounter.