This looks interesting:
Interesting indeed. I have ordered the middle of the three options. The top of the line has additional features I will never need, the middle version checks off all the boxes: Backs up files in use; Has master/Incremental/Differential capabilities; has a scheduler.

Now if the UI is not too overwhelmingly multi-level and complex, I'll be good to go.

Thank you for that link.

tanstaafl.