15300ST or 15400ST : Best investment?

[Watchcentric]

Hi,

I love the AP RO and like to buy either a 15300ST or a 15400ST.

I like them both but was wondering which one, longer term, will keep its value best? Ie, which one is the best investment (or least worse investment as a watch like this is never a good investment imho).

Both use the same calibre but the 15300ST is more like the 'Jumbo' in size, so this makes it maybe more interesting longer term?
On the other hand the 15400ST is 41mm which seems to be the 'new norm' (cfr Datejust 2).

If I look at older RO's (ones of 36mm for instance) they seem to have lost a lot of value so I wonder if the same couldn't happen with the 15300ST a few years from now...

Thanks for your thoughts on this!