Grisar
451
Great post, great watch.
Great photos and great explanations! I used to dislike 5170 a lot, but you just described the feeling and impression I had when I saw it in metal and tried it on. The watch is very understated yet very sophisticated. For me this is one of the best examples Patek offers.
I am also an admirer of 5070. The movement, although Lemania based, is ways better constructed and finished than any similar ones from VC, Breguet, Roger Dubuis that I have examined. The case is a marvel of construction. I hate huge watches in general, but this 42mm looks just as elegant as a normal 39-40 one. Even the small movement (compared to the size of the case) doesn't look out of place due to the clever design of the back case edges.
For me, I can own both even they are two very "same" watches.
Tried Datograph many times, but just never had the feeling that I would like to own one. For mainly two reasons: the movement is too thick. The thickness makes it easier and possible to finish the edges of bridges in a more extensive degree, but the movement just looks not fine enough from construction perspective. The case design is also not my taste and the watch doesn't sit well on my wrist. Well, some may argue this is very German Bauhaus way of design, but for me the Patek Calatrava (e.g. Ref. 96) is a much better example of Bauhaus design in a watch case. The excellent ergonomics of most Patek watches comes from decades of experience and you can feel it only when you put the watch on the wrist.