Hmm maybe it's just me but I always felt Noc > Regen.

Maybe it's just me but I conserve tons of MP healing in Noc then I do Regen, I only use regen with Sch. HOWEVER take this with a grain of salt as I've yet to heal hard content.

Reason being is because Noc grants me 5% healing power (slight perma "potency buff") The shield means a bit little less healing. Mixed in with Light Speed and I can top the party off without burning tons of mp.

Not to mention the indirect buff it got from lightspeed (the mp cost reduction on top of it not reducing healing potency).

I will have to try Alex Savage before I can make a full call however.