The Demon Hunter is the ranged attack class. They specialize in bows and crossbows, which they supplement with numerous ranged attacks, traps of various types, and even a few melee range skills. They are the only class able to wield hand crossbows, as well as the off-hand quivers.
There is another question on the viability of entangling shot. However, this question is about the shock collar rune. Everyone says that even with the increase in damage, it cannot compare to other DH ...