I had this car for a 7months. This car has the best utilization for a super car. I considered Porsche 911 turbo, Audi R8, and Ferrari F430, but with a family, those cars are unacceptable. Considered Alpina B7 but, shaky reliability and it being non-factory car, I disqualified it from my list. I opted for S65 AMG for performance and 4 door convenience. I have not regretted choosing this over Porsches or Ferraris. Until Porsche Panamera or Ferrari comes with a four door sedan, this car has no competition. Plus reliability wise, MB is a far better choice. For now, this is the only choice for supersedan.