I own the JR 662 and am very pleased with it. The programming is really straitforward, and the 6 model memory is nice, I really like the digital trims too, I hate trying to trim a model with the other kind, cause you keep over-correcting. This isn't a top end radio, but for sport flying it's really all you need. Its a little more money than some of the similar 6 channel computer radios out there, but it also comes with a really nice reciever.
I say go for it.