Dropbox is still superior IMO. I have a Office365 subscription but OneDrive can make a huge a mess with default settings if you aren't careful when you set it up on anything but a new machine. It's just less slick overall - plus I really want first class Linux support.

I don't want to pay for two file storage systems though and the 3 host limit on Dropbox is a shame. Without it they'd be all but guaranteed to lock me in and I would (gladly) start paying again in a year or so for more space.

Instead I switched to syncthing, which is great but not as nice.

Yeah I have many different cloud storage subscriptions. And although I don’t like Dropbox as a company due to the things they did, it is the only thing that really works, all the time.

A “refuse” to “upgrade” to the fileprovider version, as I don’t want stupid&slow functionality like iCloud Drive.

OneDrive has had block level sync dor all files for 4 years.

Syncthing not only does block-level sync, it does it in a distributed fashion.

https://docs.syncthing.net/users/syncing.html

I'm not sure on what basis you came to your conclusion but I do not have my issues with OneDrive on Mac and gdrive on Windows for ages.

They mentioned a specific feature (delta sync) that not all providers support. Onedrive seems to after 2020, but I don't think Gdrive does.

It doesn't matter if you're just syncing a bunch of small files (code, documents, images) but can make a big difference in bigger files (compressed archives, large media assets, etc.)

https://www.cloudwards.net/block-level-file-copying/

Google Drive used to, maybe still does keep versioning metadata in file names