Today, I bought my new daily driver - a 2015 S65 AMG, the most powerful sedan ever made by Mercedes-Benz. It has a 621 horsepower twin turbo V12, and mine may be the ugliest one in existence.

With a base price of over $90,000--and prices that can range to near double that for a well-equipped S65 AMG, the 2015 Mercedes-Benz S-Class lineup isn't cheap. That's always been beside the point, ...