I recently upgraded to an AT&T 32GB iPhone 5S.
It's not perfect, though.
The glass inserts on the back shattered after the 2nd drop. I had to buy a case, but I got the red one, and now it looks dirty. And the fingerprint sensor is only about 85% accurate on the first try. The second try is around 99% accurate.
The device is great though. iOS 7 is nearly flawless, and I love the feel of the bare aluminium when I hold it without the case.
I still haven't found a phone that can best the A7 in power, either. All of my friends' phones can't launch games or run them nearly as fast, and I mean, it's not even a competition.