Pure str bladers were the best for a long time, but in the skill update, they seem to be doing minimal damage.
I'd say that int hybrid s/s or spear is best for 90 cap with only light/cold/weapon.
I'd add from 18-40 str (I added 40

).
I suggest an int build, because they grind fast and in the new skill update they're gonna be the ownage.