I have both Sigil of the blade and the 20 dmg one from Eok. I've put the 20 dmg one in a few times but 95% of the time have Sigil of the blade in. Damage is like ~1.1k for a regular lifetap and heal crits with all the AA are around ~2250 or so (that's with boon of the seeress). I think this is kind of sad considering classes that have healing AA could potentially heal for 5-7k+ with the same setup. Would be neat if we had some aa there to improve that. Others out there that would always run the 4 extra damage no matter what?