Conservation vs. Concentration

[Spaghettimonster]

I'm trying to do a cost/benefit analysis on these two abilities but I can't do that yet because I don't have the numbers. I would like someone to fill me in on the stats.

(1/5) Soulflay. * [VC?] [CD?] [CT?] [BDmg?]
(1/5) Pestilence. * [VC?] [CD?] [CT?] [BDmg?]
(1/5) Wither. * [VC?] [CD?] [CT?] [BDmg?]
(1/5) Flaming Skull. * [VC?] [CD?] [CT?] [BDmg?]
(1/5) Banish. * [VC?] [CD?] [CT?] [BDmg?]
(1/5) Desolation. * [VC?] [CD?] [CT?] [BDmg?]

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| Legend/Key |
| CT = Casting Time |
| BDmg = Base Damage |
| CD = Cool Down |
| VC = Voodoo Cost |
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Also, What is the Voodoo regen rate in combat?
What is the Voodoo regen rate out of combat?

I appreciate all the help, I will post the results when I do the calculations.