Was reading something that suggested the 5C wasn't designed to be low-cost, it just happened to be lower cost than the 5S, so for all the haters out there that go on about how it isn't cheap, I'm sure they're not actually aiming for cheap
I'm not in the market... the fingerprint thing looks cool, as I'm one of those that doesn't use a passcode as it's coughbersome and people can see you enter it anyway... so perhaps next year, when the 5C inherits features of the 5S and the 5S finds some other gimmick and becomes the 6, I'd be interested in a C version. Always enjoyed my 3Gs.
That said, also not sure I'll stick with iOS, I'm not blinded by Apple's light and can switch, but I'm content with what I have now, it works for me and I'm competent on my phone. I hardly see the point in changing to become less competent on my phone, when everything is working. When things stop working, we'll see what's on the market.
As for iOS7, been using it for a few weeks now and it really grows on you. Much better than iOS6, though it is a little less polished... every so often my device restarts, probably have too many apps running, but it never happened in iOS6. They'll polish it up over the coming months I'm sure.