Best DNS configuration for have fast speed

Hi friends,

I’m configuring a cluster DNS, and i’m checking how can i have better speed in resolve the requests:

-I will create 3-4 DNS for have more redundance and security
-Each DNS server will be in different country, i’m thinking buy him in: OVH, Digital Ocean and Amazon. You recommend me buy servers in other providers for have more fast cluster DNS?
-I will install cPanel DNSOnly

Any recommendation in your experience for be more fast?.

Thank you very much friends.