I am using markor on android and silverbullet (web) on anything else.
Joplin was OK, but the android editor felt sluggish and the only available web GUI was... Meh. And I still had to use WebDAV to sync. And I lost all my data once due to how Joplin "think" sync should be done.
Now using syncthing with markor&silverbullet. Nice combo, and I can still access all my notes over WebDAV anyway.