Just being curious... why do you play two DH at the same time?For criticism:
Both of them, Jen and Vin, look good. You could try and craft some better amulets, shoulders and gloves, though.Focussing on Jen:
Why do you use Steady Aim as a passive? Do you really keep monsters away from you or do they actually meat you in close combat? If so, replace the passive. And do you really need Preparation with Nightstalker and a CHC of ~57%? ;)Gear:
I see why you use Natalya's Embrace but you could consider using Inna's vast Expanse instead of it. It gives you a bunch of more life and armor and lets you facetank even better. Your Natalya's buffs grenades - you don't use them. I don't know how expensive Inna's stuff is in US, but I assume you could find yourself a pretty cheap one with lots of vita, %life and armor. Not to mention the +130 dex set bonus.
When exchanging Natalya's Embrace for Inna's, you wll lose the 7%CHC bonus from the set. You then would consider replacing one of the rings with Natalya's Reflexion. Should be pretty cheap in the AH, if you don't need CHD on it, though.
Just some quick thoughts...
My DH, on EU: http://eu.battle.net/d3/en/profile/Belzhorash-2410/hero/117425