[Duplicity-talk] Best Duplicity 8 backend for Google Drive?

[zga9uhnq4g]

    Looking at the duplicity 8 man page, it appears that there are
    several options for storing backups in Google Drive:

• gdocs://user[:password]@other.host/some_dir
• pydrive://<service account’ email address>@developer.gserviceaccount.com/some_dir
• gdrive://<service account’ email address>@developer.gserviceaccount.com/some_dir

    Which of them should I expect to be the most reliable and efficient?
    Searching duplicity-talk, I saw some indication that the gdocs API
    has been deprecated, which makes me leery of using it.  The man page
    says "GDrive: is a rewritten PyDrive: backend ...", but I didn't see
    any mention of gdrive in duplicity-talk, so I'm not sure how widely
    it is being used.
    
    I have a couple questions about the Notes on the Pydrive and Gdrive
    backends in the man page:

• What are pros and cons of using a service account versus a regular account?
• The Note on GDrive Backend only mentions using shared folders for 'My Drive', does that mean I can't store a duplicity backup in a non-shared folder?

        thanks,
        Peter