I've read that Zénith will be released as a standalone perfume next year. Very curious to smell it ( and the other two l'bs), but I daren't get my hopes up.
Also, l'heure de nuit can be added to your list, southernardens. Most keen to smell this one.
Of those I've sniffed, Encens Mythique was perhaps my favourite, but it's ultimately not my thing.
La Petite Robe Noire EdP was my least favourite.
Regarding Guerlain more generally, I added Liù to my wardrobe this year ( and received some of the vintage parfum from a wonderully generous BNer). Also squirreled away lots of Jicky extrait and some older l'heure bleue extrait, too.