A guide using D2PT meta stats. The guide focuses on a typical soft support (Position 4/Offlane Support) Bounty Hunter, but can easily be used for hard support as well.

As for Facet choice, both are currently above 50% in win-rate, making them both very viable! Cutpurse is the safe option, but Through and Through can be a great choice if you are confident in your ability to hit multiple targets with Shuriken Toss!