Aperion, we get it, you want AST shields to be good. But, sadly, they arent. Once you get your AST to level 60 and start trying end game with it, you will see, very much so, that it is a heavily gimped stance. It has far less heal potential than its regens. There is never a reason to use shields over hots with AST unless you are just in an instance with tons of trash and don't want your regen to pull threat off the tank the second the mob is pulled. Take this from someone with AST, WHM, and SCH all i185. Astrologian doesn't suck, but its shields sure do.