I've been thinking of getting an account with T-mobile but I really want the treo 600. Is T-mobile definitely getting it?? I've come across an unlocked treo 600 but should I wait for it from T-mobile?? Whats the difference anyways with un-locked phones. Some people tell me I can get unlocked phones to work with T-mobile but the phone itself will always say "Cingular" for example. Is that true?? Anyone have experience with unlocked phones??