FWIW - I bought an NB4 this week to do some testing. Pleasantly surprised at the feel in the hand and in general, the menu settings are much easier to drive than my M11X primary radio or the Futaba 3PV. Mirroring the throttle channel the CH3 or Ch4 was super easy. The default frame rate of 380Hz should be way more than enough (one day I'll work out how to do decent latency testing).