Not sure about what to equip in my off hand. I have a twice upgraded boot knife in my main hand, but due to ordinary luck (does that Flynn dagger even exist?) I don't have another ToT normal/heroic mode dagger. I do have the twice upgraded and legendary gemmed Spiritsever though currently in my off hand which seems like a better option than equipping any of the LFR daggers.
My question is, should the RNG gods smile upon me one day soon, and another Dagger drops off a normal or heroic ToT boss should I replace Spiritsever? Playing around with Shadowcraft is appears that I'm best to hold on to Spiritsever until I get a heroic thunderforged dagger, and even then it's only a marginal DPS difference (less that 0.5%). This seems a bit odd. Have I broken Shadowcraft or is the 504 spiritsever really that good in the offhand?