I am setting up URL structure and permalinks for a new domain. Just our of curiosity, which one do you prefer, WWW or non-WWW on your domain name?
I saw more websites using www but some removed it in their url, didn't know why. Any comments?
However, regardless of which one you decide to go with you should do some SEO tweaking and set a preferred domain.
You should redirect (permanent or 301 redirect) the non-preferred domain to your preferred one. Because search engines consider URLs with and without WWW as two different websites.
A basic Google search for “how to redirect www to non-www” (or vice versa) should point you in the right direction.
Cheers and good luck!