Android allows more user customization. iOS does "just work" with little customization. This allows for less confusion and less to go wrong. With Android you can miss out on how to do something and it requires more interest or effort...
I had the international i9300 and the AT&T i747, and now I own the iPhone 5. I would consider myself a tech enthusiast, and to be quite honest I like the iPhone more.
The hardware in terms of build quality is far more superb, the camera...
Quite simply, I want to sell my P6810. Pictures speak for themselves. Screen has one light scratch, a handful of small micro marks, and has some noticeable wear on the back. Comes with everything included in the photos: box, charger...