RE: ParkZone- why Spektrum only?
Buy a Spektrum 6i for your PZ BNF stuff. That's what I did.
I fly a 14MZ and a 9CHP (backup) normally and if it's a PZ plane I really like, I'll buy the PNP version and put a FASST receiver in it. Just remember that some aren't available in PNP and others (especially the micros and most of the Blade Helis) are not easily retrofitted with 3rd party receivers and servos.
Follow the money. Parkzone=Horizon=JR=Spectrum. Same with E-Flite/Blade.
The real tradegy here is that Futaba and Tower and Great Planes can't see all the money they are leaving on the table in this marketplace and the market share Horizon buys up every day putting these Parkzone planes out there "ready to fly" with all JR and Spektrum equipment. Unbelievable from a marketing standpoint.