{Hmmm...} Holy Maul vs. Blessed Hammer? Light Dmg vs. 10+mp?
Since you'd usually only use these when meleeing anyway probably to raise club skill, I'd go with Light damage, espicially since I'm taru, and extra damage can go a far way over extra mp. Which makes these better than Whm AF1, a loss of 1 dmg, big deal. Holy Maul +1 (HQ) puts makes it even better, plus you get it 3 lvls earlier.
I would totally get this hammer over the Blessed. Light damage is AWESOME to have. Most of the mobs you fight around this Lv are weak to light, so this adds that much more to a melee WHM. The +10 MP really doesnt do much, but an extra cure can come in handy sometimes.