I have an iPhone, should I get an ipod too?

I don't want to take up all my phone's storage with music, or waste battery. Should I get an iPod nano 7 in addition to my iPhone 4?

Added (1). It is an 8gb iphone

Personally, I see no point. Although, it does depend on what size memory your iPhone 4 has. If it's 16GB+, then I think it's a waste of money buying an iPod.

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http://cgi.ebay.com/...RK:MESE:IT.