I have THREE cold iron quarterstaves my acrobat can use. One is blessed cold iron from the DDO store, two are BTA cold iron blanks.

The blessed cold iron does good damage without any additional crafting. That's what the blessed refers to and it stays through disjunction.

I made a holy of evil outsider bane +1 (ml 9 with masterful) to pass around my assorted leveling toons who might need it.

That leaves me with two more. My acrobat is 20th level and my crafting toon has 100+ in all schools. I have scales, blood, mystical items, and whatever else I might need to sacrifice to the cause.

What should I make to best take advantage of the two items and breaking the widest range of DR?