With Nightstalker insignias being rather on the expensive side (800g each, as I type this...), I figure I might as well go with cheapo insignias for now. That said, which is the most common of the physical damage types - Slashing, Piercing, or Blunt?
Franco - Enchantments get stripped off way too easily and frequently. Plus, at 1100-1400g each, they're a bit on the pricey side for the inconsistant protection they bring)