RE: How Many Channels
I had a Futaba 6 channel 2.4 and sold it to get a Spektrum DX7. I went that route because Spektrum offers way more options when it comes to receivers compared to Futaba. Correct me if Im wrong but the cheapest full range receiver Futaba offers is a 7 channel one for $99 on towerhobbies. Compare that to Spektrum who offers a full range 5 channel, 6 channel, and 7 channel that are all cheaper than the Futaba one. The five channel is perfect for any plane just needing 4 channels and even has an extra port for ailerons so you have the option of using a Y extension or not. I think that receiver can be found for $59.99 or cheaper if you look around good. Also the DX7 is way more versatile than that Futaba radio I had.