I just want to mention that I’m still with DEVONthink. It has
it’s shortcomings but it’s all in all a very very powerful app. I
feel documents and notes are actually organized safely and don’t
just float around in iCloud/Dropbox.
I am now using integrations with everything like airmail, use
the “Save PDF to DEVONthink” option multiple times during the day,
and use it for organizing things I have to act on.
For the interface, I made the topbar to “text only” and tried to
make the UI as minimal as possible. On top, I use KeyboardMaestro
to get rid of all the weird shortcut quirks that I never got used
to, like CMD-N creating a note with the keyboard content.