Drop rates for keys are horrible. I can prolly craft 30+ for each char, but I'll farm some more, get 50+ at least.

Changed my build a little bit and improved considerably my survivability. I have War Cry Impunity and Hardened Wrath on 2 Barbs in a 10 secs round robin (a bit less if u have some CDR) with Chilanik belts and Threatening Shout Falter on the other 2 Barbs in a 5 secs round robin (less if u have CDR) with Witching Hours. That helps a lot against RGs. I dropped some toughness but got 20% reduced damage and reduced attack speed from mobs, and got some DPS boost as well.