I've gone handwritten, obsidian, onenote, and now Trilium. Considering switching to something else because there is no offline mobile support.
I use memos and trilium together but since neither offers mobile offline support considering switching both. No reason to run two services when I could run one.
Transitioned from a mix of Keep + OneNote + Obsidian.md to just Keep (hidden todo list feature I utilize to keep track of shipping orders I have yet to receive) and obsidian.md (I have yet to import my old personal and work KB into the synced KB).
My other option was NotesNook
Syncthing on my home server, synced with each device I use for notetaking, has been glorious so far. I wish Obsidian would offer Sync for a cheaper rate, because I'd pay if it felt like anything near the cost of actual sync and storage. But Obsidian's cheapest tier is more expensive than my email hosting!
Woah! Yeah it is! Well nearly. I pay $50/yr for my email. Obsidian is $48/yr for sync. My email even comes with WebDAV which if it were a better protocol could do the syncing! Haha
I expected obsidian to not store the kb locally with bare files but more like in a microsoft cloud-like approach.
Oh well. At least it's stable and has partly a transactional sync history.