Quote Originally Posted by DragoonWraith View Post

As I don't see Twilight Mithral anywhere in the SRD, I'm not sure I can count on finding that in any dungeons or shops. Plus Mage Armor can be cast on allies, and lasts 60x as long... meaningless with Persist, but then it's costing a level 7 slot...
Mithral is from DMG: reduces ASF by 10% (besides other benefits).
Twlight is from BoED and MIC. +1 enhancement.

Both on Chain Shirt are awesome.

You could also take 1 level in Complete Warrior class Spellsword: reduces ASF by 10%

You don't need both Spellsword and Twlight: one or the other (unless you are wearing Mithral Breastplate)