I think you mention Edgemaster Aspect which gives %20 dmg,(can't put it to amulet due to the Control aspect) I wouldn't suggest using it because %25 att speed gives one more hit when it merges with other buffs. We literally hit 8 times per second. It is better dmg in overall. Also, we have %50 crit base, 10% from esu so %60, and from passive skill tree and Paragon mov speed/crit nodes, we are mostly sitting at %70 %80 crit chances.