Why wouldn't you use OneNote? Honestly, I can't see any reason not to.
I take all of my notes in OneNote - internal meetings, industry events. I used to type things almost exclusively on my laptop, then I switched to handwriting using a stylus (for the same laptop), now I use my stylus on my personal phone and it auto-syncs to my laptop, so I don't have to carry anything around, and I remember better since I'm hand-writing it instead of typing.
OneNote syncs across all of my devices, has touch input so I can type using a stylus on my laptop or my phone, and I can categorize in folders and subcategorize. There's a search functionality so I can find the note I'm looking for, copy in things from outside OneNote and it sometimes auto-includes a link from where I copied it from (like a URL), and it's outrageously intuitive.
If I lose access, my notes go away (unless I've exported them), so that's potentially worth considering if you want one thing across work and personal. You can export it, but if your new place doesn't have OneNote, you won't have all the same functionality, just a big PDF document.