Now note, I own a Moto X and an iPhone 5S. Neither phone is a slouch, and I use them both tons! I still lean toward iOS just for some small details that I DO notice after using iOS for so long. So here is my list: Smoother framerate when scrolling SLOWLY, My iPhones have never had this problem, unless its a media filled webpage (5S is an exception, never had issues with framerate on it.) Lower Screen Rotation Delay (My iPhone is near instant to rotate the screen, while android will either never do it, for have a huge delay.) Better design on the Play store, (The App Store is extremely easy to find new things all the time, and the homepage showcases apps extremely well.) Less Google intrusion. (My iPhone, while an Apple Phone, on an Apple Operating system, you don't see Apple everywhere, they are not intrusive, while on Android you see "Google" or "Play" just about everywhere.) Touch Input Lag.