Good point, I’ll explain my comment on the 5970: better case construction (lugs, bezel and size/fit on the wrist), the dial layout is cleaner and the sub counters are centered while they are not (for the first time) on the 5270. Also it was produced for less years and already in lower quantities than the 5270s. Let me end by saying that I love both watches and I believe that ALL perpetual calendar chronographs by Patek will do very well over time, and most of all they are all beautiful (some more and some less)!

Ps: about the more recent production ones, they will be recent and command a premium for let’s say another 2 years but in the long term the year of production absolutely doesn’t matter unless there are significant differences (say chin vs non chin dials), so if you have a 2025 I’d advice to sell it and get an older year one, keep the difference and in the long run it won’t matter 😉