I'm on AT&T and I have a Moto V60i, and it's good phone, just outdated. I want to upgrade, but stick with Motorola. A friend has the v400 on cingular and it's awesome, but AT&T only supports the v600, which is nearly $400 right now. Anyone have it? Is it worth it? I hear the only difference between the V400 and 600 is the bluetooth technology, which I don't want/need.