Interesting discussion. I of course am totally outside my competence when it comes to the differences between the staggeringly expensive watch Jeff is sharing with us and the even more staggeringly expensive Patek, but I must join John in deploring the unwarranted pejoratives directed against Seiko's cal. 6138, which were manufactured in the millions and ran like a top.
Jeff, say what you like about PP/BP in terms of value added and price points but leave poor Seiko out of it
What did the 6138 ever do to you?
Seiko still makes a very nice, well finished, very functionally satisfactory automatic chronograph in the Flightmaster BTW. A very different watch than either the PP or the BP but none the worse for being a couple of orders of magnitude less expensive, while we are on the subject.