iOS 6, the world's most advanced mobile operating system is so easy to use, and is streamlined with user experience in mind and over 800,000 Apps in the App Store. Featuring iCloud, iTunes, and more, iOS truly is the world's most advanced mobile operating system.
I think iOS and Android are almost completely the same. Your speed has to do with your carrier as well. I like my Galaxy S III better because it is more customizable. Other than that, I think they are the same.
Depends on what you need. I want a choice on what phone I get so I like Android. If that's not important and you think that Apple's phone is all that you want and need then iOS may be what is right for you.