Just for anyone in the same boat as me, wondering whether it's worth an upgrade from the 5 to 5s. I'd say it's probably only worth it if you're going to get a lot of use out of ALL of the new features, given that there's not a great deal of difference between the two devices. In the reviews I've read it seems that the OS is not really any more fluid on the 5s, other than in a couple of places. If you're into graphic intensive games then clearly you'll see a difference with the A7 over the A6, but it seems that the A6 is already plenty fast enough for most tasks and making the processor faster doesn't actually speed them up. This is as I suspected. Obviously any processor intensive tasks will benefit. People have reported a bit of an improvement in Safari loading speeds. For most things though there won't be much of a difference between the two. Animations, splash screens etc. are often the bottleneck rather than the processor. If you're a heavy phone photographer then you'll see a huge improvement in the camera and flash. That alone may justify an upgrade. TouchID is a great convenience but does it justify an upgrade in itself? I don't think so, but some might. The potential is awesome but it's limited in its current form. If any 5s owners disagree with what I've said above regarding the A7's effect on the OS, feel free to say so. I'm just repeating what I've seen in tech reviews. Discuss!