What domain is better? .net, .com, .org or .biz

[MorStone]

Would like to know your points regarding the choice of domain extension to register.
Thinking to try Sibername.com domain registration service. Will it be worth to deal with them? Any info on them please?
What is better, .net, .com, .org or .biz?

[Frost$]

I like sibername.com, it is really cool for domain registration services.
I would also like to add that doing routine things such as dns changes, nameserver updates and registrar transfers is extremely simple with Sibername. It is a simple domain registration site, with a handful of helpful features that are popular with reviews.

[Jodi]

Hey guys,
Sibername.com looks really great. They are offering special:

Register the New Domain Names like .properties or .social - for better web addresses and with a better price!
GET YOUR DOMAIN NOW

The abundance of positive feedbacks about their domain registration services makes this Registrar the most preferable. I'm impressed!