Monk - Epic/SoM or SoM/SoS?

[Trainer34]

So I've previously been told that epic fist mainhand + Scepter of Mastery offhand was pretty optimal for monk DPS until getting into the really good end-tier weapons.

Recently, I've also been told that having Scepter of Mastery mainhand and Stave of Shielding Offhand is better dps.

I've looked at two different damage calculators, and they gave different answers...

so which one is better?