nice review. Then, you're asking a very tough question. As I have never seen the MB in the flesh, I cannot possibly give an opinion about its Enamel Dial and I understand that a picture can't capture nor give the feeling which one gets when seeing it live. As for the aesthetics of the dial, I prefer the Dato, it is unique with its "off centre" subdials and the big date and in my opinion it works very well. When it comes to the movement, I tend to follow your thoughts, the Dato has a "wow!" effect that no other movement can provide, but this said, the Minerva is splendid as I think the Lemania in the PP, VC, Breguet is. There is much less "wow" but more subtlety, more elegance in my opinion. There are just two different schools, the German and the Swiss, neither is "better or worse" just different and I find myself wondering at the Lemania of my VC more often than at the Dato movement. In this case both movements are at the top of the tops so it is only a matter of taste, is Beethoven better than Mozart?
Two very nice pieces of horology you have here Robin, congratulations.
Cheers
Francois from Down Under