NextDNS is advertised as Cloudflare + Pi-Hole. And I think this is correct.
Something wrong with the Pi-Hole, I have to sit down (likely at home), and do it -- even to add/edit something. NextDNS is much simpler, I can set up from anywhere and I can even ask my wife to fix herself stuffs.
Must be just personal but these days, I'm not too keen on doing everything myself the way I want. I'm learning to say NO to a lot of things.
What boots up almost instantly? It's supported on quite a few OSes [0], not to mention the underlying hardware. I found AdGuard's (Home) UI to be a bit more polished but it feels like it has feature parity with PiHole 5 otherwise. I tried both but stuck with PiHole since the community around it seemed more developed.