The new “gold” 5s is the most wanted version followed by the new “space grey” version. The “silver” version of the 5s might be the only version you may still be able to find locally and likely in only the 32GB or 64GB configuration, but everywhere we checked we were told that they were sold out of the 5s in all versions.
The 5c still seems to be in stock very about everywhere right now. While not all stores may have all colors, they do seem to have 5c phones in stock. It isn’t clear yet how sales are going for the new lower priced model, but local sources in our area that we spoke with said the 5c was selling, but not like the 5s did.