What methods of input/upload do you use for Payables invoices?

Hi,

I was wondering if anyone was willing to share the methods by which they either input or upload invoices? I don't need the details of how it works, which software you use, etc. Just an overview of the methods used and if possible the % that goes through this method. We are reviewing some of our current processes and wanted to get an idea how other organisations process their AP invoices.

For example:

Smart scanning

XML or cXML

Manual Input

Custom program to populate AP interface table

Etc.

If you are moving away from a particular method, which one and why?