Have you considered a 550ix MSport? The RR is indeed sexy as hell, but I would be concerned over reliability. However, I also agree with the poster here who recommended the Cayenne GTS if it's a sporty SUV you're desiring.
2011 Panamera 4S...GT Silver / Espresso
2013 Porsche Boxster S; 2012 Mini CooperS
convertible; '04 GX470
Prior BMWs: `05 645CiC; `07 650i; `08 M6 convertible; '08 135i; `11 750ix MSport