I like AllMyNotes. I first used it all the way back in 2011, v2, upgraded to v3 when that came along, and v4’s in beta now so you can see both that the author’s here for the long haul and that the product’s had a decent history.
It’s a hierarchical note organiser, the visuals are nice, it’s well implemented, but there are some things I’d use it for if I could which have meant that it’s not my main notes manager any more.
So take all the goodness of AllMyNotes and add: different note types including task lists, outliners, spreadsheets, plain text, code…; hotkey facilities that can capture a webpage to a new note; tags; better integrated search; multiple open notebooks and probably lots of other stuff I’ve forgotten because I don’t use them. You get Rightnote.
So try AllMyNotes. It might be enough for you — it was for me, for ages, and I still use it for some odd bits. And the developer is usually very responsive, which is a definite plus.