I hit WHM50 a couple weeks ago, and have been using a Wand of Gales with a Healer's Hand IV materia melded to it. The stats are:

Piety: +4
Attack Magic Potency: +4
Wind Magic Potency: +24
Healing Magic Potency: +16

Last night I got a Malevolent Mogwand, which has stats:

Magic Accuracy+30
Magic Critical Hit Rating+15
Chance to restore MP

Of these two wands, which is better? And what causes the "Chance to restore MP" effect to kick in? Do you have to be active and hitting a mob? Mogwand looks cool and has a cute sound effect, but I am not sure how magic accuracy and magic crit is helping me as a WHM. I figured healing magic would be a better stat, but what do I know.

I know for two handed weapons, a lot of people use Chiran Zabran's Tempest, which has a magic accuracy stat -20, but healing +40. Stats seem all over the place to me.