As none of both is perfect you have to think about compromising.
IMHO the PPF got some pros that don‘t come with the 3KF.
PPF:
-very good dial (more grey than brown but still a good mix and the best thus far (PF for example is completely ugly))
-you got a 9015 which is proven to be sturdy and a service is possible just in case
-over all build quality of PPF is decent out of the box without modding
-DW is spot on while people are still debating over the font on the 3KF...
3KF:
-awesome looking movement +++ (even though nobody knows how stable it is in the long run)
-bezel and crown are better than on the PPF while the endlinks destroy the image of an ootb decent nautilus rep
-dial is a bit too brown, too warm, not grey enough In my view
not much left to say
i would go for PPF if it must be the rose gold 5711