I've been using a combination of Apple Notes (personal/family) and Notion (work stuff) for note taking over the past few years. It's served me well, but the urge to simplify my tech and not rely on SaaS/Big Tech gets stronger by the day. Not that Notion is really Big Tech... yet. It is a VC-backed $10bn+ company, so unless they IPO in the next few years they'll probably get acquired and who knows what will happen after that. 

I still use Apple Notes for family things (it's effortless), but I've decided to move all my personal and work note taking to Obsidian. Notion is very friendly right now and you can export your pages in a variety of formats, so grabbing all my notes in Markdown wasn't too much of a pain. Obsidian has a bit of a learning curve (it's super-powerful), but I've been using Obsidian founder Steph Ango's guide to how he uses it and it's really helped. I have relatively simple needs.

So far I'm absolutely loving it. It's fast, powerful and all my notes now live as files on disk, so if Obsidian goes rogue I can easily move somewhere else. I'll write my own guide to how I use it in the coming weeks, but the TL;DR is I'd definitely recommend checking it out if you're in the market for a long-term, open home for your notes.