Which site is the best to register for a domain name?

For european domain names registration I would strongly recommand www.register.eu. They are affiliated to Register.be the Belgian leader. This is a very professional domain registration service especially if you need to manage a large volume of domains names, international extensions or search engine optimisation. They are also very available people to talk to and get advices.

My experience with Register.eu was simply great compared with the one I had with "discount" services...

http://www.register.eu

http://www.register.be

http://www.e-zone.fr

For: .com .net .org .info .biz go to www.internic.net. They are one of the main registrars for theese domains.

If you want your domain to ends with your country abbreviation, you should try searching for your national internet domain registrar