I’m a long-time Joplin user and relatively recent logseq convert. Joplin is excellent at what it does, which is provide I nice UI (desktop and app) for managing and editing markdown files organised in a folder hierarchy. It’s sync solution is quite solid, too.
The thing I’m loving about logseq though is how fluid it is to use - I just throw everything on the day’s journal page and then re-construct the blocks into something useful later. It has been a godsend for the way my brain works.
All the cloud sync services generally have a free tier of something like 5gb, so you don’t have to pay unless you start using it for other things (or have a crazily huge logseq folder).