Two point, personally I like to attach them about as far apart as possible, I feel it lets me crank it down tighter when I need to, and the rear on the outside of the buttstock when shouldered strong hand, which gives a little extra length when shouldered support side. I have a padded VTAC I like pretty well, old MS2 not as fond of it, will someday try a VCAS.
Attaching as near as possible to the front and rear of the receiver allows it to behave more like a single point, but with an option of being less floppy.
QDs are great if your stock accepts them and they're integral to many handguards now so no added bulk. I'm pretty fond of the Magpul RSA for rails without QD sockets or not where I want them, but hooks are definitely noisy, Magpul's M-Lok QD socket is a nice minimalist piece too.