I always felt that the drag date / day / moon function was a bit lazy for Patek but adding the instaneous is a huge step forward. The complexity of managing power and timing is something other watchmakers have achieved and it is used in one other PP model. This puts it ahead of the 5327 (as my choice) but it still didn't have me reaching for my credit card. It's definately nice but I isn't "need" just yet! I will mull it over and see it again 


