I consider the SC to be the next-generation replacement for the FC. It upgrades the processor from the Atom Z3735F to the Atom x5-Z8300. It upgrades to an Intel wireless solution with full 802.11ac support and a better wireless range. It also adds a USB 3.0 port.
If you were purchasing the STCK1A32WFC (i.e. the version with Windows 8.1/10 pre-installed), then you want to purchase the STK1AW32SC (which has Windows 10 pre-installed) as its replacement. The STCK1A32SC does not have Windows pre-installed; it is intended for Linux users.
Hope this helps,
Hello N. Scott Pearson:
Thank you very much to for the information provided previously.
I hope that information was useful for you and it provides the details you were looking for.
Additionally, on the following link you will be able to look and purchase Intel products:
Any questions, please let me know.