i don't name anything that doesn't require a name, i think it's really silly. my ipod was named rupert though and my iphone is eleanor, just because itunes asks for a name.
get whichever ipod would suit your needs. i'd get the nano because idk how people even like enough things to fill up 160gb, but if you can get anywhere near that go for it. i just prefer the nano, i hate the way they redesigned the classics.