Best oil for '06 350Z - regular or synthetic

Whatz up guyz...
quick question for ya'll cause I'm about to do my first oil change.

Which way to go:
regular or synthetic

Also... Which brand have ya'll had/heard the best look with.

Thanks,

CL

I just put in synthetic into mine 2004z. Still not sure if it rght thing to do.

Anybody else...???
CL