Had an A4 for a while. Pretty comfortable, quiet and deceptively fast. All while getting 36mpg hwy. Traded her in this year before I had to start paying for the maintenance.Neither. I hate both, but for different reasons than most.
Both are far, far too low to the ground for me and my back & hips to want to climb in and out of.
Both are a pain in the ass to load onto a flatbed or trailer without scraping - they require additional ramping / blocking. If you screw up - I know from personal experience that the stupid little air splitter on a Porche is over a thousand bucks to replace.
What would I pick instead? If we're talking money is no object - and thus repair costs and upkeep are likewise no object - then I'd probably go with an Audi A6S - it'll go fast enough for my desires, they're easier to get in and out of, and they benefit from the road hugging all wheel drive system.