Medica II

[Holy-chan]

A plus for Medica II is that its regen effect is separate from the regen effect from the Regen spell, making the healing over time even better when both are active. I'm the kind of WHM that uses Holy a lot, which means that I want the tank to be healing as much as possible before I go in Cleric Stance mode. I start with Stone Skin, then I let the tank get proper aggro, then I go Divine Seal, Regen, Presence of Mind (to speed up casting speed), Medica II, Cure II on the tank if needed, then Cleric Stance and Holy spam. That is, unless the pull isn't big enough to warrant all this, in which case I cut the Presence of Mind and Medica II, and sometimes the Cure II if it's unnecessary.

Also, you wouldn't believe just how often my Medica misses a person or two, whereas Medica II would have reached due to the extra 5y radius. Can't always expect everyone to stick close together when playing with randoms. Anyway, when the HP loss is rather small on several people, I will usually use Medica.

[Kaethra]

Divine Seal + Medica II + Regen is a pretty potent heal over time. Its very similar to a Cure I spam every 3 seconds.

[Sanguisio]

Medica II is for sustained chip damage, when MT is taking damage.
Turn 2 enrage to boost heals