The only real difference between those radio's is personal preference really.. For my dollar I buy Futaba. I have seen less problems with signal strength with Futaba than JR. One thing I didnt like about the JR radios is the tendency of the the servos to go full deflection when your signal gets too weak, verses futaba just chatters real bad, but you still have control.. this is just a personal observation. I believe if you route your antenna properly and keep your batteries charged you shouldnt have a problem with any of the manufactures.

Good luck,

FW