[Shovah32]

Vestals are capitol only but with 8 or higher dominion+bonuses for temples later it isn't that bad.
Sure they have 0 prot but they also have very high defence, ethereality and(with an S9 bless) twist fate.
With their low cost(3 resources and 20 gold currently. Going up to 35 gold with the patch) you can also always get your maximum amount per turn.