Ed,
I have been a JR guy for awhile. But that Sbus on the Futaba 8fgS is the ticket. Its SO EASY to setup and expand. Plus for $480 you end with a 14ch rx. 2 sliders, 2 knobs etc..
DX8 only has one knob and that is a total pain.
Don't get me wrong I loved my JR 10x, 9303 and 11X (still...