The PLM is one of my favourite, I clearly see, thanks to your post, the differences between the former and the present model.
I love the way they re designed the dials, and, for once, I think I prefer the newer.
Same for the PanoGraph, which is a chrono I was turning around for so many years.
To be honest, I am not able to see any difference between the new PanoInverse and the former, which is good as it is a watch I love a lot.
As for the Senator Observer, this is a watch I really have to see in the flesh... Before writing any definitive comment.
I fear the proportions are not for me...
Best,
Nicolas