Well, I have to obviously go with Audi because they have the best interiors around. Maybe not the most luxurious (ie Mercedes) but they have to most logical layout and good fit and finish.
Audi S8
Or The BMW M6 which is just off the walls and this is my favorite color combo (with Interlago Blue Metallic exterior). White leather (and this leather is by far the softest leather I've sat on for sure) and Carbon trim. The aluminum trim is nice but I dont like how rough it is to the touch. Carbon looks cooler too.
