I read up on the stickies but had some questions still. I was originally going to just post the couple of builds I came up with and ask what was best but I have some general questions first.
Wrath of Xotli - Is it a must have? I see it unfeated in the Raid Guide build but in my recent parses, DE and AoX damage is pretty damn significant so I would think +50% dmg is necessary. Follow up question is would you rather have points in Wrath of Xotli or Knowledge of the Underworld?
Improved Burning Skull - Again I see a lot of specs skipping this but it really does an okay chunk of damage in parses. Where does this fall in your feat point heirarchy ... would you ever give up a point in Knowledge of the Underworld for it?
Spitfire - I see knowledgeable HoX saying more points DOES increase dmg of it and I see knowledgeable HoX saying more points DOES NOT increase dmg of it. So which is it?
By the way, these are the three specs I'm considering for K6/raid DPS assuming Wrath of Xotli and Improved Burning Skull are good and more points in Spitfire are bad.
Butcher Focused
Searing Hatred Focused
Butcher and Searing Hatred
Please keep in mind I have the T4 sword if that changes anyone's opinions on Butcher being more useful.