I have one of each, an H480 and an H Plus both with a RS, I can not see any difference whatsoever. In fact, I will be installing an orange H520 body on my Plus today (old eyes dictate the swap), and I will examine it closely while it's off.
However, I heard somewhere that Yuneec put a "Newer Version" of the RS on the Plus. I don't know what that actually means, might just be the latest firmware. I can only assume that the "older" ones are still comparable, and possibly upgratable to whatever the "Newer Version" is.