Do you want to pay a lot out of warranty, or would you rather pay a lot out of warranty? If you want to pay a lot out of warranty, I'd get either. I have driven both though, and would get the Range Rover over the Porsche. While the Porsche is nice, I prefer both the ride and looks of the Range Rover Sport.
2010 335i M Sport Coupe -- Black Sapphire Metallic|Coral Red|Loaded|JB4 Stage 3|BMS DCI|VRSF DPs|Camaross 6k AE|Performance Gloss Black Grilles|CF Performance Spoiler|CF Quad Diffuser|Double Layer Black Chrome Quad Tips|CF Roundels|Smoked Reflectors|Red Cyba Scoops|193s Painted Lamborghini Metallic Dark Gray