I have the following, Spectrum DX6i, Futaba 7C, Futaba 6EX, Orange, Spectum DX5e, Hitec with DSM2 module, Futaba with FrSky module, Tactic 650 and Tactic 850. While all work and quite well, I find the Tactic 850 to be far the best for the money. Easier to program, very versatile in switch selection, wireless buddy box and tactile feel. The 650 is almost as good as the 850 but I think the 850 is well worth the extra $30 . In my mind the TX850 is the best of the lot and easiest to use.