Crit Rate or Total Damage?

100*1.03=103 damage.


100*1.5*0.94+100*0.06= 141+6=148 damage,
100*1.5=150 damage.

150/148=1.01x increase.

that calculation is assumming a crit of 150-150% or average 150%, the total damage is better damage on paper, i'd still go for the crit neb though. because it would mean you NEVER hit non-crits, so on things you can only KB with crits, you won't get a random regular attack that can mess you up. and the range required to hit full caps is now much lower.

The 3% total damage isn't a straight 1.03 multiplier because he is getting %dmg buffs from other areas as well e.g. ancient warding

Even so, without doing calcs, based on similar questions I asked months ago, %dmg will be better. If it isn't, the difference is negligible and not worth the money.