The Patek is an iconic piece, to be sure -- but, for a number of reasons, I prefer the Geophysic. The fact that the city ring is fixed is a plus -- but, even better, the cities themselves are placed on the ring so as to approximate their relative positions on the world map that adorns the dial. So, looking for a particular city? Just look at the world map and find that city easily. Very intuitive. Also, the Geophysic includes DST indicators, which allows time to be read in the cities observing DST, while maintaining relative accuracy to the cities that are not observing DST. Of course, the aesthetics of the dial are simply amazing. And, finally, the True Second complication adds a wonderful and unexpected dimension to this piece. I find the movement of the second hand to be an incredible mechanical feat, and very much in keeping with the overall vibe of the watch (which almost has a bit of a navigational feel to it). It is mesmerizing and fascinating to watch the True Second mechanism at work through the transparent case back. All in all, a masterpiece by JLC, methinks. Cheers, Jim