I have an iPad 2 with the old iOS 5.
I heard that the newest, iOS 8, will really slow down my iPad 2. And I don't want that, it's not worth all the amazing new features. So should I update it to iOS 6 or 7? Or just keep it at iOS 5? My iPad is currently really quick with iOS 5. I do not want to lose that.
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What is the best iOS for the iPad 2?