One thing that surprised me, though, was that the curved rear window of the Mercedes wagon creates a little distortion. Not bad, certainly not dangerous, but I’m surprised they were okay with that.
Overall, on the objective merits, I’d call it a draw. The BMW is more comfortable and feels richer; the Mercedes is more practical and feels better screwed together. Dynamically, it’s your call—the characters are very different. I like both, for different purposes.