I don't have twice born star yet. Which is better for dps? Critical strike chance or critical strike damage?
I think I've heard that, the difference between the two makes little difference on paper. If you are a min/max guy, I've heard crit damage works better above 45-50% crit chance.
But my question is why TBS? If you want to run critical build, there are many other great sets like Julianos, Scathing Mage, and Nightmother which are also easy to craft/farm. To my knowledge, they function better than TBS with Shadow + Thief.