I have got mine yesterday (from T-Mobile Germany) and it is a really great device. For people who think that the Bold is too large and the Pearl too small, the Curve has the right size. It just took me a few minutes to get used to the smaller keyboard. I was previously using a Bold. Some other "testers" I know said that the Curve 8900 feels "cheap", but I can't agree to this at all. It looks and feels better than the Curve 83xx series.
The only issue I have with the Curve 8900 is the shutter lag with the camera. After you press the button it takes two seconds before the picture is taken. But on the other hand, I don't use the camera very often.