RE: 2nd Radio?
I just bought a 7c. It is the 3rd radio I have bought, and the second digi radio.
My frist was the 6xa. This radio was and still is a great radio. When I bought it, it was 250$ as is the 7c. Now its even cheaper.
The 7c is alot nicer then the 6xa, well worth the extra few bucks. I have only owned Futaba radio's for aircraft, so I've stayed loyal.
7c does everthing I need a radio to do, till i have more models then space.. hehe.
If your coming off a 3 channel this should be plenty.
my .02