Just another vote toward the casters for this. They ALSO need solid AC, and the wis is very, very nice to get along with the AC and resists. If this were 20INT instead of 20WIZ, I would default to an INT caster in a minute - my shield of Rainbow Hues does me better for pulling, my Atrementous is solid for everyday MA/stunning, and as a SK (I believe Palis are in the same position), my off-tank high damage gear is 2H.
heh, most casters have 255 wisdom (or can get it by geting KEI)... I personally have over 255, and i wear no gear for wisdom (+mana is my main goal)...
This shield i'd love for A) its + mana B) its AC...
Its got more AC than any other 2 slots put together.