I've been trying the Joplin route as well, with OneDrive for online storage. The good:
Easy interface, very similar to Evernote
Runs on literally everything, and (so far) everything has stayed in sync
Easy local backups (I use a plug in for this)
My import from enex files was perfect
The not-so-good:
That first sync is *painful*, especially on mobile (with approx 3GB of data)
I'm pretty sure on mobile it downloads the entire database. You can tell it to only download attachments when selected, but there seems to be no data management, ie. it never frees up the space.
No web access, which would eliminate the need to use the less than stellar mobile app.
Joplin is great, but I trust EN more to keep my data safe for now. My employer of course sees things through the "365 costs less and we get more" lens so they have not been willing to support such a large price increase all at once unfortunately.