We purchased a lease return vehicle, replacing a Volvo XC90. The MB is pure luxury in nature. Although the controls are more complicated, the features are second to none. Everyone remarks about the car when we're out and about. At first I thought it was overpriced, but the feel while in the car shows that it is indeed well designed and confortable. We have two 15 year old boys that are 6 feet tall, and the room in the 2nd row sold us on the vehicle. They have lots of room and don't realize they are in a car, even on long trips. Heated 2nd row seats were also a selling point as we live in a cold climate, but have only had front heated seats available before. We are very happy with it.
Huge sunroof makes rides more enjoyable. Easy to get into the 3rd row seats. Heated 1st and 2nd row seats. Power tilt/telescopic steering wheel. Compass and altitude display. Sound system. Dark tinted windows.
Navigation system and radio controls are too complicated. Park assist should beep earlier as you approach barriers.