Simply put, what phones to buy? I know there is a bluetooth phone, but no one seems to know what it is. (Yes, for all that Sprint has some of the best phones out there (in the US), it's way behind on bluetooth options.) One can also get a Treo, but that is a bit bulky... is that the only option? thanks -RS PS I realize someone else is asking about iSync capable phones, but my question is qualitatively different as I am locked into Sprint PCS.