I'd wait and check out the next Nexus phone. Should be coming out soon. Pure android without all the excess bloat from the carriers. I have the iPhone 4S and the GS4 and think the GS4 blows it away. The Swype/Swiftkey/Google default keyboard is way better than the iPhone. Bigger better screen. Voice dictation is much more accurate on GS4 than my iPhone.
Though Cut/Copy/Paste on the iPhone is superior. Android irritates the shit out of me when I am copying something and it will not paste. WTF!!!