one of my major clients back when i lived in Socal was a luxury import car dealer. among other marques, he sold Jaguar and RR/Bentley.
i would agree that these Brits really know how to define elegance and luxury. to this day, those cars still have the most beautiful, luxurious interiors that i have ever sat in (although the Audi A8 is starting to come close). and the exterior styling also screams elegance. and if you want high performance to go with all that, you can always get that generation's XJR
however, the bad part about spending so much time with my client is that you really see how terrible the reliability of these cars are. along with the oil leaks already mentioned, things would just randomly fail on the car. and not small things - i learned from the service manager that a new V12 cost about $25K, and that they do dozens of these replacements a year...some of them on cars not even a year old.