My current Dovahkiin is an extremely odd build using the following main weapons:
1) an Ebony Warhammer enchanted with Soul Trap
2) The Nightingale Bow
3) The Wabbajack
and
4) Destruction spells
She also wears the full set of Guild Master Armor with the Amulet of Articulation and a stolen Ring of Sneaking.
She has begun Lost to the Ages, which I know there are three possible items I can get her at the end of the quest (but only enough materials to craft one.)
Should I get her the Aetherial Crown, then combine something like the Apprentice Stone and Atronach Stone (Magicka absorption without the Atronach penalty!)
or should I get her the Aetherial Staff (she's currently at level 29, so she will conjure a Dwarven Spider Worker or a Dwarven Sphere)
or should I get her the Aetherial Shield (causes foes to become ethereal for 15 seconds, giving her time to regroup or rethink her strategy.)