Rogue MH/OH? Hoh & epic
 

I tried briefly to get a parser to work, but was having difficulties.

Has anyone parsed whether it better to have 13/20 Horn of hsagra in mainhand or to have epic in MH?

I'll try to get a parser working in the next day or two to test it. Any recommendations as to which to use?

Whichever has the highest top end damage, you want in your mainhand, regardless of the damage ratio.

Go epic mainhand, hsagra will not outdps epic in MH and you will be losing out on max backstab damage. Vyemm's fang is almost as good as it gets atm for mainhanding non epic and its 13/17, even then epic still rules most fights MH.