rear shock upgrade for touring 2 up

[Nemesis]

Hi all


Could you advise me which would be the better upgrade for the rear shock. This would be for touring 2-up.


I would guess at, with everything loaded and the two of us on the bike, would be around 28 stone / 178 KG (shhhhh, no comments please  :b )


is the R6 or S1000RR likely to be better?


thanks

Im doing alot of 2 up, i just adjusted the standard shock to 2 on the spring and 10 on the rebound just to soften it up, we both could tell the difference especially on poorer roads. As we were looking at nitron upgrade