I've been doing some thinking. Apoc is a very powerful skill, but its kinda niche. Unless I'm sure a fight has a Mdmg buster of hell its kinda unnecessary mitigation, since Cure II/coupled with other healing will probably top the tank or party member off.

Instead i've been running with Mana Shift. It's got some fun utility. Sending a low healer MP, topping a plds mana off for Requiscat, giving the BLM a wtf moment when they can flare again.

Both have their uses but i feel mana shift has more raw utility in the choices you have with it and a lower cd.

I run with:
Lucid
Swiftcast
Addle
Erase [I love it too much xD]
Mana Shift

I'll know how i feel about it after I see a fight that can make rdm go dry without raising.