I'm pretty happy with org-mode, albeit minus the "OCR" bit. (Most of my org-mode docs tend to be written in org and stay there, there's less of this "pulling documents from outside into it" business than evernote)

That doesn't work for the large amounts of paperwork I scan in and need to catalog.

Google drive

Google Drive mobile applications leave a lot to be desired. The main problem is you can't store all your notes offline -- you have to select each file individually, set "make offline", and even then they don't auto-update.

yes, you are right but that is also an issue with the nonpremium version of evernote.

Google Drive/Docs has surprisingly poor search capabilities compared to the native Evernote client. Almost everything about Docs is sluggish and clunky compared to Evernote's lightweight simplicity.