While originally attracted to the 687 dial, over time I have drifted more towards the 685. The 687 can look stunning in some lighting conditions such as a bright sunny day and while more subdued otherwise I always felt that I may get tired of it over the long run. Of all the 47 pams what I like most about this model is the contained thickness, even if it comes at the expense of 30m WR. It doesn't hurt that the 685 appears to come at a discount in general.
Out of the several Panerai’s I have, it’s far and away my favorite. Love the shape of the bezel, the wording on the bezel and most of all the gorgeous gradient dial. For sure a keeper.