Which phone is the best?

I have AT&T I want to buy a new phone but I'm stuck.I have three that I like picked out the LG cu720 (the shine),Sony Ericsson W580i (the walkman), and Samsung u600 which most people haven't heard of. It has the touch sensory ons and is a slider phone actually all of the phones are.I like phones where I can bluetooth songs to other people.IDo any of these have that? Which one is the best? I don't use the intrernet or text just simple things. Do you know of anyone or have you ever heard anything about these phones good or bad I need to know.Thank you for any help you can give me.