I'm glad to hear Acaciosa is still on the market, though who knows what condition it's in. Still, it's one of my favourites and the decants I have are running low, I will have to think about saving up for a small bottle of the new stuff.
I was lucky enough to get in on a split of the Extrait version of Parfum Sacre and secured myself 30 ml. Wonderful stuff, deep and rich, but not a radical departure from the EdT, just more intense and luxurious, and with impressive longevity. The edt version of Parfum Sacre is fine, I think. My bottle is a few years old but not vintage, and I think it's lovely and still worth buying.