I’ve been really enjoying obsidian.md:
It is very snappy (even though it is based on Electron). I love that it is all local by default with no required login or sync (and you can use your own syncing solution). But it also has a good business model attached (it’s free for personal use, but if you’re getting paid for any of the notes that you keep in it then you need to pay for yearly license). Works great on Linux too.