I don't think that's where you want to go, Samsung
My Samsung-loving friends are constantly without any phone at all because their battery is dead. They are always hauling (or forgetting!) car chargers, wall charges, cords, and external battery packs.
The latest iOS 7 has brought spells (a few days long before the problem goes away for a few weeks) where my iPhone drains faster than it used to. Apple should (and can) fix that.
But even on those worst days, I can keep...