5s just doesn't have any good features that would make me want it this year. iPhone 6 is expected to have a 4.0, 4.7, and 5.0 displays, new design, TouchID improvements, A8 Chip and M8 Chip, iOS 8, enhancements to the 64-bit architecture which still needs improvements, give it the constant crashing and other spec related problems. iPhone 5S only got Touch ID, improved camera, and other minor spec changes. Not worth it. Even if you're upgrading from the 4/4S. Heck, you could even wait for it from the 3G/3GS.