Cyanogenmod > all
For whatever reason, the android OS when AOSP on the Droid X (specifically? Maybe other devices at first as well) 'races' into high gear, causing sluggish performance, and a wicked hot battery. Which then causes the battery life to hit 0% in about ~30 minutes by just being idle.
i never had the race condition crop up on obsidian or the spin off cobalt. the biggest issue i had was with wifi being sketchy in turning on/off....
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