but what is about the RG?
PT or WG with that black dial would be my personal "killer" 
The Tourbograph doesn´t speak to me - maybe too obviously. The Breguet looks "interesting", but bulky and the others are "no go´s" for me.
The RL PLM (PT) is probably one of the nicest and most understated ways to spend that amount of money ...

... isn´t it?
Thanks FX for the very informative post, which I appreciated a lot.
Oliver