Get the BEST radio you can afford!!!!! I was told this a dozen times when I was getting into the hobby. BUT... Keep in mind. More channels does NOT indicate a BETTER radio. Just a higher price. I fly a Hitec Prism which at the time I got into this hobby was Hitecs best. 7 channels and after about 7 or 8 years I still have only used 5. I think that out of about the 35 guys in my club only 2 use more than 5 channels. A good 6 channel computer radio will function just as good as a 9 channel and there are alot of choices in the six channel realm for less money. If you know any history of the used JR it may be a way to go. It sounds like an OK deal with the 2 recievers but there are things to consider. Does it have servos? About $15 each. Does the used radio come with rx batteries. Those are $10 to $20 each. Crystals for both recievers? those are abou $8 each. Switch harnesses? I think about $8. Add all that up and compare to the price of new. If you get within about $75 of the new radio I would go with new.