Sorcerers Which Storm Atronach Do You Prefer

I play both PvE and PvP, and can't decide which Storm Atronach morph to get:

GREATER STORM ATRONACH (increased duration and health)

http://esohead.com/skills/23492-greater-storm-atronach

or

SUMMON CHARGED ATRONACH (more powerful AOE)

http://esohead.com/skills/23495-summon-charged-atronach

Does anyone who uses these skills have any insights? Thanks!

I used Greater. It is more useful overall. You don't really need more damage during soloing. The Atronach is powerful enough. In groups, your party members can active the AE. So that makes the Charged Atronach somewhat redundant. Plus it is always good to have a stronger summon.

I'm using Charged but will consider changing now