I chose to go with Zimmermann hi carbon z coated rotors, especially knowing they are OEM vendor for Porsche brake parts too.
Here are some numbers and pics in case you are in need.
Not shown, but also replaced will be:
- Caliper bolts (2 per caliper) - $12/bolt, two per caliper
- Brake pad sensors (front and rear - replace even if not damaged - age adversely affects sensors especially when attempting to remove from pads. - $40/front set, $26/rear set
- Rear caliper brake pad springs (1 per caliper) - $34/two (full rear set)
- Front caliper pad springs (2 per caliper) - $64/four (full front set)
- Brake pads front and rear (I chose hawk ceramic for low dust and great stopping - although initial bite is less effective until heated
- Front caliper brake pad guide (retainer) pins

Rotors are directional so ensure you get the proper ones for correct sides (I may put up PNs later on).
Rotor quality just by looking appears awesome. Will tell later how braking was. Read some reviews that were raving about them.
Fronts were purchased for about $600 per set (L &R). The rears were purchased for about $300 per set (L & R).
Hawk pads were about $160 for front, and about $145 for rears.


EDIT - PART NUMBERS:
Front Left (Driver): 2010-2016 Porsche Panamera turbo (excl. PCCB/I450 kit), Zimmermann Front Left Rotor Hi Carbon, Coat-Z, PN: 55433KX 2011, Price: $304
Front Right (Pass): 2010-2016 Porsche Panamera turbo (excl. PCCB/I450 kit), Zimmermann Front Right Rotor Hi Carbon, Coat-Z, PN: 38392ZP 2011, Price: $305
Rear Left (Driver): 2010-2016 Porsche Panamera turbo (excl. PCCB/I450 kit), Zimmermann Rear Left Rotor, Coat-Z Anti Corrosion, PN: 58791XT 2011, Price: $167
Rear Right (Pass): 2010-2016 Porsche Panamera Turbo (excl. PCCB/I450 kit), Zimmermann Rear Right Rotor, Coat-Z Anti corrosion, PN: 89321PZ 2011, Price: $151






Some pics:

 

Those look fantastic - I may have to reconsider my OEM option.

 

those are some nice looking rotors, thankfully the non turbo versions are about half the price