Quote Originally Posted by Shieun View Post
-- If your weapon grid is weak, character attack will be better than elemental attack. If your weapon grid is over 100% assault, then elemental attack will be better than character attack.
That is the short version, yes.

The rule of thumb I try to use is that you should always run two elemental sources - either two elemental attack Eidolons or one + elemental advantage. At this point, assuming that your weapon grid is 80%+, whether you pick a third elemental source (two elemental Eidolons + elemental advantage) or or two elemental sources + character attack doesn't make much of a difference damage wise. Elemental is still better for damage though, since character attack can be gained from your weapon grid and is thus much easier to come by. But you can get 20% HP from character attack, which can easily be worth the trade off.