Obsydian
Mystical Cats is my go-to for easy answers, but right now I'm learning the Chrysalis Tarot and it may be a close contender for that role!
Recently I've fallen pretty hard for the Fool's Wisdom Oracle but I've not seen too much of it around online
Enchanted Map & Kuan Yin Oracle were two favourites for me in the last 12 months. I found Enchanted Map very practical for daily draws and Kuan Yin deeply comforting.
Goddess Oracle (Marashinsky) really delivers the goods as far as I'm concerned when I want a deeper insight - so thats perhaps the chief 'go to' deck.
I also found the Chakra Wisdom Cards packed plenty of punch when needing a breakthrough point of view.
The Messenger Oracle...it's my go-to and most favorite Oracle deck, hands down.
Enchanted Map, Wild Wisdom of the Faery, and Goddess Guidance are also some favorites.