I've noticed quite a few publishers cardstock has become difficult to shuffle. Blue Angel are so glossy they stick to each other and Llewelyn has gone for cheaper card which I find chips at the edges.
I actually love Lo Scarabeo and US Games card stock, it's light, flexible and has a slight sheen so the cards shuffle beautifully as did the old Llewelyn cards.

@FairyCrystal re: Hay House.
Nah, it's nothing to do with card quality, I just don't vibe with most of their products and creators.
I admit I have caved and got Mystical Shaman Oracle though, mainly because of Jena's artwork and Alberto Villoldo's input. If it had just been CBR as sole author I probably wouldn't have bothered. Oh and I only paid £8 for it in the sale, I wouldn't have paid full price for it.