Traditional EDI 810 process vs new VMA Voucher


We are up on 9.1 for a few months, using GL, AP and PO. We are planning to get started with electronic invoicing - we have a high volume supplier that will feed us an invoice. I read up on the traditional EDI process, using the F47041,42,44 tables. Now I see there is a new option in 9.1 - I read docs for the new VMA Voucher process (see doc id 1499920.1). Very interesting. I would really love to hear any pros and cons of these two electronic invoice approaches? Thanks.

Product Version 9.1 ; Tools
Operating System Microsoft Windows x64 (64-bit)
OS Version 2008 R2