Also, (and I stand to be corrected), due to WLTP, I understand the MK7.5 PP's dropped the dual injection rails that it had before (to prevent the built of of carbon in the intake valves), and gained a Particulate filter - both of which the non PP MK7.5 never had. Sure I'm biased as mine is a 2018 non PP, and yes, the bigger brakes with the logos do look very nice, but for 80-90% of standard driving on UK roads, I bet you can't really tell much one from the other ? Again, I don't know this for fact, but I've heard stories of the particulate filter and revised mapping robbing a few PS, so the difference between the two models is more likely in the 10-12 ps area rather than the full 15ps ?
If you can find a good PP model in the colour, mileage and options you want then great, but if that "perfect" example happens to be a non PP model, I for one would never let that put me off it. YMMV.