This is our first MB and we are very happy with it. Excellent ride quality, beautiful interior, smooth drivetrain, and extremely comfortable seats. I had difficulty getting my wife interested in a wagon much less a MB. But, after taking her to the dealership she quickly reconized that this is a great family vehicle. The 6 cylinder is adequate and fun to drive but not fast.
The two-screen entertainment system is fantastic. Power tailgate is great. The is a very spacious vehicle that can easily carry six adults in comfort.
It is a long vehicle and can take a little time to get used to parking it (the parktronic works great and is recommended). Watch out for the MB all-weather mats. They are magnets for shoe scuffs. The fabric mats handle use much better.