I was trying a new facetanking build before I got para 100 and it's the best build I've ever used it.
Hard to Die Build:http://us.battle.net/d3/en/calculator/demon-hunter#WdgQiV!fXe!ZcYaaZ
1st - Gloom and Bola Shot
2nd - 2 Spike traps
3rd - 1 Ball lightning
4th - If you have a pack of monsters use Vault ToC crossing over all monsters.
So basically you use gloom to have the life steal and reduce the dmg while shooting bola to stun enemies while placing the traps.
Ball ligthning will help to keep up with your life steal and disc regeneration when you have huge packs making your life and disc always be full.
Vault to make the monsters like Savage Bulls etc... to lose their aiming at you and also ToC crits and deal dmg so you are always dealing dmg regenerating life and disc all the time.
I use to do this when I use Vault, when I finish the movement I place one trap right away and use vault again coming back to the place I was before and another trap.
As soon as I find a good software to make a video I'll be posting how to play with that build.
Ok that was fast here it is the video. PS: I'm sorry for the lag but actually that is the way I usually play. http://youtu.be/6J9Od_9j9i0