Domain Registrar and DNS service provider have to be diferent?

[kingp]

I have been told that if they are separate then they are better. But I am really confused here. I see many people use them from one provider and moreover even they use the same host.

If one has to put registrar and DNS service provider separately then what are the best available options?

[zeus]

Some of our domains have cloudflare, that's it.

And coming to registrar any good one will do, namesilo, namcheap, porkbun or even godaddy.

[kingp]

Namesilo and namecheap aren't looking for me. Since they have issues. I have read the reviews. However Google domains and porkbun on the other hand pretty decent.