If we're talking about a "no consideration for money" high performance people hauler, then there are lots more crazy options:
Cayenne turbo - 550 HP
X5 M - 555 HP
M63 AMG - 505 HP
Landrover Sport - 510 HP
Personally, I like the Porsche because it's actually a great offroader, high performance, luxurious, has a high towing capacity, and still has curb appeal even if it has questionable looks. Love the Caddy wagon too though! I'd love to drive one!
I wonder if they'll be putting the 392 in the SRT8 now? That would be a nice game changer!