Which nebulite should I mount on my weapon?

Hi SP I'd like to know which nebulite to mount on my weapon as well. I'm a 170 NL.

What i have:

-90 attack claw. Potiential: 30% boss and 6% attack
-All decent skills except SI
-About 30% luk on equips.

From what i've heard, % total damage or Pdr would be best. Which one would be best best for me? Thanks in advance

Boss damage %> def ignore %> damage % - attack %.