Back-up TX - F7, F12 or 10

I have a Devo 10 (with deviation) and love it. I want a second transmitter and might get into FPV one day. I mainly want it for buddy box with my son so he can learn to fly planes/quads/helis. I can't decide if the F7 will work for my needs because I was thinking if one day we have fpv goggles the screen on the F7 could be for me as a buddy box FPV screen in case I need to jump in and save him when he has the goggles on. However it sounds like the F7 isn't an ideal deviation transmitter so maybe I should just get another Devo 10 (or go crazy and get an F12). Any feedback would be much appreciated.

Chris

Thanks FDR. I guess I meant the F12E not the F12. So you're saying it should work well with Deviation and the FPV screen would also work if it was "master" so I could spy on my son ("slave with the Devo 10) and he was using goggles?

Also do you know if it would basically just use the same .ini files as my Devo 10?

My only other consideration would be a Spectrum radio to be "master" only because I am using mostly Blade products and the "panic recovery" switch might be nice (unless I can program that into my .ini files?)

Chris

If the F12e has the same inputs as the 12, your 10 ini files will work, but might not be optimal.

And yes, you can program the panic switch with deviation. You can even simulate it on aircraft that don't support it directly. However, HH doesn't support Devo transmitters, and that support is one of the best features of the blade products. I use a dx5e to test new blade aircraft in case I need to call HH.