I was just mentionning the finishing and chamferring of the cams etc in the movements. But I don't wish to compare which is best or not as they are all great chrono representatives (and the Duometre is in a different style as less "opened"). I was just bouncing on the fact you see the PP or VC mush below in terms of finsihing.
We'll have many Patek to look at together with the 5230 etc... !
Cheers, Mark