http://us.battle.net/d3/en/calculator/monk#ecYgTQ!bcd!ZZcYacGot some new gears and tested this build against barb.
I find this to be the best build against Barbs.
Stack as much spirit regen as possible. And don't put any attack speed other than Inna pants.
No need high ehp. Just need high dmg with soj. +30k pot bonus.
Run around the map just like barbs with spirit marathon.
Juke barbs to use leap or charge. If you are sure they are on cooldown, engage with blinding flash.
Barbs stack some dodge against blue bells, but with high spirit regen, you WILL have a chance to kill them.
My key stats with this set up:
200k unbuffed dmg with soj & only 9% attack speed
+15 spirit regen
+30k pot bonus
I use doom hammer with 0.9 aps, I'm under 1 aps with this set up.