The blue dials are close, but the recto on the 2016 is one I really like. I can’t say that about the 2018 non blue. Between the blues 2016 is my preference as well. Although ones a verso and one is a recto, they come across very close.
I love the reversi duoface concept and the ultra thin from about 6 years ago (not the limited bleu but the standard) was sublime. The bleu was as well but gone in the blink of an eye.
In my view the moon is the best reverse duo currently offered - it pulls me in the most for sure.
Thanks for the write up and pics my friend!!