Most people favor big/high crit weapons for Avenger builds but I was curious what people think would go well with the Defiant Runepriest.

Runepriest is Str/Con or Str/Wis - the Con version gains proficiency in simple and military hammers and maces, the Wis version maintains simple melee/ranged - they get Scale and Lightshield

The runepriest I'm building for an upcoming campaign is Defiant (Wis Secondary) but I'm thinking of taking either Bastard Sword or Triple Headed Flail as a weapon prof Feat - both +3 proficiency, D10 damage and versatile so I can keep my light shield...

What do you guys think, know any good synergies with a wisdom secondary for feat support or a weapon enchantment that will work well for the runepriest?