Hey all, I just came across this sale on the OEM Contitech serpentine belt. It's less than half of MSRP, more than $20 off any discounter and $45 less than Suncoast.
Double check your fitment, as it varies with year.
From the Suncoast site, only for reference:
Panamera & Panamera 4 - 2009-2013
Panamera S & Panamera 4S - 2009-2013
Turbo & Turbo S - 2009-2016
Not compatible with Panamera GTS"
No affliation, yada, yada...