I am not him, but I have a few years of G500/600 fixed wing experience. G500H is an improvement on the navigation side, but loses all the benefits of the engine/airframe integration of G1000. Things like the single limit power display, big instrument page, FADEC information, tail camera, elimination of the old engine gauges, the clean-up of the panel, plus HITS boxes, larger displays, etc.
Here is the GX panel:
