Solo HC DH:
http://us.battle.net/d3/en/calculator/demon-hunter#aZQdXV!aeY!baabbb
Like most people I'm conviced that my build is THE build. I tried pretty much everything, but still went back to the build I had in mind after the beta.
1 hatred builder/1 single target spell/1 multi target spell/3 defensive abilities is the way to go in my eyes.
Hatred builder:
-Hungering Arrow is the best imho. Use Shatter shots for random packs and Devouring Arrow for act bosses.
-Entangling Shot. You dont need that slow. You have a Templar tanking for you - and I hope you gave him some good items.
-Grenades are a no go because of the range.
-Bola .. meh, not so bad. But lacks DPS.
What makes Hungering so great is the fact you can shift left klick and hit bosses that even aren't on your screen. Same for Elite packs.
Single target spell:
-Rapid Fire. No. Standing still sucks.
-Chakram - too random.
-Which leaves Elemental Arrow and Impale. Both are ok. Note that EA only costs 10 hatred with 170% weapon damage, while Impale costs 25 with 250%. I'm using Impale for the stun.
Multi target spell:
-Multishot wins. Really, no way around Multishot. 20 hatred for 170% weapon damage on ~5-10 targets?Insane. You want to use a high damage(NOT DPS!) weapon with a slow attackspeed.
For bosses I switch Multishot with Sentry.
Defensive skills:
-Smoke Screen is prob the best skill in the game if you ask me. With the combination of my runes you can use Smoke Screen 4 times = 12 seconds INVINCIBLE!, then use Prep, restore 60% life and be completly invincible for another 12 seconds.
Passives:
-Movement speed explains itself. Positioning is everything.
-And well, the other two for damage.