I had a PP5070R and just swapped it for the PP5970J. My decision was based purely on the fact that PP5970J is clearly a far more superior watch than the PP5070P in terms complications and movement. (Patek calls it "Grand Complications"). The latter is expensive because it is in Platinum. and IMO all hype. The PP5070 comes with "Lemania" movement specially commissioned for Patek which is going to be phased soon thus the hype. If you look around the Omega "Speedy" comes with the Lemania movement but not much talk and hype. But then the branding is so different isn't?
Henry