| Cloudflare DNS | Users whose problem is closer to a general public resolver backed by edge Anycast | edge entry, Anycast, and global-resolver baseline are more visible | If the real problem is closer to a security-oriented public resolver, this side becomes a misfit quickly | Low-medium | Best as the Cloudflare DNS path |
| Quad9 | Users whose problem is closer to a security-oriented public resolver | security orientation, threat blocking, and protection expectations are more visible | If the real problem is closer to a general public resolver backed by edge Anycast, this side becomes less convincing | Low-medium | Best as the Quad9 path |
| Separate roles before ranking | Users who do not want to flatten both sides into the same public-DNS label | Service goals, deployment context, trade-offs, and false-positive cost together | The workflow is longer, but it reduces shallow comparison sharply | Medium | Best as the final decision path |