what should the demon hunter use?

[mags85knm]

just wondering what my demon hunter should use?

-Bow?
-1 two hand crossbow and quiver?
-1 one hand crossbow and quiver?
-2 one hand crossbow?

which will give me the potential for the most damage?
which will give me the potential for the fastest attack?

any and all help is greatly apreciated.

thankyou,
KNM.