Lobo hammer +7 (highest HP bonuses + 50 LR)
Lycoan hammer +7 (+50 LR/FR/GR... small hp bonus)
Holy Animor +7 (22 defense, 18 repel, medicore HP bonus/int bonus, no resists)
I guess it depends on mages vs melee ration on your server.
I'm leaning toward the lobo hammer, because its cheap, and gives the most HP
... and all a priest really needs is lightning resistance so we don't get stunned
But i'd love input