Well i tried yesterday running a DH, it's not very easy.
Went 3k Armour, 480 all resists, 30k hp, 58 displine, 30k dps (+\-) [no ss].
Running with Gloom and elemental arrow - lightning orb.
Whites die soo fast its awesome, but running against elites is hard as hell. some do die but anything with static dmg like arcane,molten,plaged - just owns me atm (bot doesnt kite).
Well i ran my friends main hunter specs, 75k dps (no ss at all), 4k armour, 650 all res, with natalya +3disp/sec.
That did own pretty much everything, so i believe with a 40k hunter with those specs can own very nicely as long as it can KITE \ use skills a little smarter.
As a hunter it throws grenades in the wrong direction - makes it useless and he isn't able to kite atm (make it run smokescreen and kite when low hp would own everything).
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Question to you guys running Barbs, how much MF are you running with (and doing this successfully).