Depends which system you're comparing to I guess. The p40+ is the closest generationally and spec wise and thousands of dollars less expensive (with a body) than even the older S2.
Thousands Less? With which Phamiya body?
Anyway, not to knock your product but there is a heck of a difference shooting with a Leica S(2) and a Mamiya 645. Granted Phase tethers better but it won't autofocus Contax, or Hasselblad H lenses, the Leica has great autofocus and let's face it, it's a Leica.
From the dealers I've spoken to that sell multiple brands, Phase, Leaf, Leica, Pentax and Hasselblad, I don't hear anything bad about the Leica.
The Leica, if bought new also comes with a 3 year warranty and i think the latest Kodak sensor that the blad, pentax and Leica uses is the best sensor produced (and probably Kodak's last).
IMO
BC