I run my life off Devonthink (DT3).
I have 16 GB of data in ten DT3 Databases. I import everything. I would never Index things at this point. I have decided I prefer DT over the finder and I want to maintain and use one file system, not two. I would also worry about inadvertently moving or deleting something that would cause a DT index based system to have issues. I hate time-wasting tech issues
All my personal stuff (bills, financial stuff, manuals for home appliances etc) is in a DT database. I scan everything and try to be paperless except for handwritten notes I may take when on the phone. Those then get scanned as well.
Former Evernote user and DT3 is far more useful - not even close. I find using DT on OSX to store, file and look at files far more efficient than the finder, even with all of the add-on productivity stuff MacSparky talks about on his various podcasts. That’s before you start using the search, OCR and other smart things DT lets you do.
I sync DT via a dropbox syncstore - no issues ever. I religiously back up all my computers (three sets of complete disk images via Chronosync, 1 always offsite).
I travel a ton, sometimes with a portable Mac, sometimes with an iPad. I’m often in 3rd world countries in areas with no internet access. I always buy lots of memory in any iOS device I get, so I can sync everything (all 16GB of data in ten DBs) to each iOS device. That way, wherever I am I have immediate access to everything. I never want to be memory constrained - that just leads to lots of wasted time doing workarounds.
I still use Evernote but only to share trip info with my wife (easier to share stuff via Evernote than DT3 as it has a superior shared sync). We have an Evernote folder for each trip so we both always know where the other is and the details of any travel info. Evernote also has a neat web publishing feature which lets you give others links to Evernote pages. I share event and trip info with many others this way - one link and they have access to a “living” document about an upcoming event.
Sure iOS memory is pricey. Having a hardware based triplicate backup system is as well. I use OWC Thunderbay 4’s as JBODs with 30 Terabytes of Hard Drives in each one. Chronosync does incremental backups overnite - a serious photography hobby is where 16 Terabyte of data comes from. I’m starting to do more 4k video so my backup system has some extra headroom. Having each Backup system in it’s own small self-contained box makes it super-easy to use as well as swap the offsite backup regularly.
Over the years I have found I spent tons of time trying to deal with the constraints of synching limited memory devices and backing up data in many places. Backblaze or any online backup is out for me because of the amount of data I keep. So I came up with this system to simplify things.
For me, the payoff is huge in terms of simplicity and time saved. The extra few thousand dollars in investment up front in memory and hardware pays for itself many times over.