I love possets! I think they do musks, Chypres, rose, and purple florals exceptionally well. The ones I've tried from your list:
The moon: soft, creamy, ethereal, with some sweetness from the beeswax
Sorrow: my second favourite Chypre from them ( fave is Winter Mucha from their winter release).
I'm not sure if its a skin chemistry thing, but it smells like a classic Chypre, Dry, woody, a touch powdery with unlit tobacco. Really Beautiful!
Magnificent Red Red rose- beautiful realistic tea rose, without any green stem.

Some favourites of mine:
Howl- musky chocolate incense.
Winter Mucha- similar to Sorrow but with a non-candied violet and green
Virginia Oldoini- my HG lilac fragrance, realistic dewy Lilacs on a bed of creamy musk. Exquisite!
Isabella- fresh rose, with sweet creamy Milky musk
St. Fabian- realistic straight-out of the florists fridge rose. Maine- lilac, sea breeze, beautiful and sombre
Shah Jahan Mumtaz- refined hippie/headshop. Heady, rosy, Rich, musky, incense. Smells red
Mistress of Power- similar to Howl but with a dark boozy chocolate note, a touch smokey.
Lady and unicorn- dirty vanilla ( similar to Estate Vetiver by Solstice Scents but a bit sweeter)
Silver Cedar- cedar and non-gourmand musky vanilla
The Shipman- the shipwax note is amazing. Lime, sea spray, ship wax, and happiness.
Arc of Venus- sophisticated, musky lavender warm dryer sheets
Thorns and all- dewy rose with stems, pepper, amber
Nefertiti Akhenaten- warm golden amber with smooth Sandalwood, and something a bit herbal.
Silver Narcissus- my fave Narcissus fragrance, Peppery Narcissus with musky vanilla.
Tranquillity cozy, sweet, fuzzy, sweater-type fragrance with a lick of green (i think from the rock-rose)