I got one a couple of weeks back and it is very good, lots of manual control, only downside is that CS3 does not open up the RAW files, but if you download the DNG convertor 5.2 from Adobe this works well and you can then open in Adobe and use noraml workflow. The wide angle lens is great, but you do not get much passed a standard lens (60mm equivelant) on the zoom.
Its fast and responsive enough and no downsides found yet.