These are beauties, and I own the 673, as you know. While I may slightly prefer the 587, due to its symmetry, I do also like the 673. Interesting that the cases are slightly different, per Sergio's pictures from a while back.
which are indeed..sublime..the 662 comes out of the contest with a bleeding nose, IMO. And that's, surprisingly not due to the Marina Miliare on the 673 (the presence of Marina Militare on a Panerai's dial is, for me always a winning feature) but to the.....