Cavaliers or PVT?
Depends on your traits and if you’re going full cavalier, or just trinkets/armour. Crit damage increases how much damage your crits do, but the crit itself is based of your power, so even with high crit damage, if your power is low your crits will be low as well.
I used to run a build that used valkyrie and cavalier mixed and got my precision from other sources. It hit slightly lower than full zerk, but with way more survivability. Crit damage wasn’t nerfed too badly after the patch, so I would play around with a build site and check the numbers and find a balance that suits your play style.
It is not what you do, but how and why you do it that counts.