You should get those Dx7's Alive and Kicking......... they're a Glittering Prize when working right. Easy to setup the basics, it's once you go for the complicated mixes that things get sticky. I haven't Promised You a Miracle.....RC Groups will help a lot on that front, if a little sarcasm laden. Just turn them on See The Lights and Let There Be Love, you'll end up Hypnotised.........
Sorry, couldn't resist.
AA's last pretty well in the i6, I had one before the Frsky (which is woefully under-utilised). Just watch the antenna, mine took a few hits and that's what killed it.