[zzzmarcus]

I've been using TheBrain (https://www.thebrain.com) for ~10 years now and haven't found anything that comes close to it in terms of flexibility. If you haven't looked at it in awhile, it's worth checking out again. They have a new desktop app, much better mobile apps, and even after all these years, development continues steadily.

I've got 16,399 thoughts in mine and add more just about every day. Anything I think I may want to know later goes there. More ephemeral notes go in Apple Notes (I used Evernote for a long time but became annoyed with their business model and haven't missed it). Everything else goes in The Brain.

Search great, the ability to link notes as parent/children/siblings is extremely powerful once you get the hang of it.

It's not free, but it is, in my opinion, easily worth the cost.