my fave is the 5146P for the dark ebony-gray dial and markers without numerals... and the small detail of the 'frame' around the date window.. it all adds up to what we are all saying here... a very natural wristwatch that goes with everything...
The Calatrava case is so damn beautiful, flowing, classic, but in this reference, larger, a great size, and has such a nice centered wrist-stance... A real world Patek, highly wearable, love 'em.