Is Kies now available for the US? I looked yesterday and couldn't find it. I'd say be careful about going that route if the Vibrant isn't fully supported in it yet, as loading international 2.2 firmware may blow away the settings on the phone to work with T-Mobile. I didn't dig too deeply into how separate the firmware was from regional cellular settings when I had the Captivate.

At some point, 2.2 will be pushed over the air.

And I'd be curious to hear her experiences with the phone. I attribute my bad experiences to buying the device so soon after release (thus I was hit bad with the GPS issue) along with the inability to have it work like my iPhone in regards to media sync/playback. For a non Apple product, the hardware seemed decent. If I were to look at a Windows Phone 7 device, it would probably be the Samsung variant.