Here's a fun video from the Everything Apple Pro blog. It's a race between iPhones. Every model is lined up, powered off, powered on and otherwise tested. Which one is fastest? We'll let you see for yourself but here's one spoiler alert: The tester concludes that if you already have an iPhone 5, there's no need to upgrade. https://www.youtube.com/watch?feature=player_embedded&v=8eSrdgTHhK0 There are, of course, other reasons you might want one of Apple's newest phones...