For me, this is a great gadget because it saves space and I can try out musical ideas without having to set up my big keyboard, which I have to stow away due to space restrictions.
However, please note there ARE NOT and WILL NOT BE any Vista drivers for this unit - I've had this from Creative themselves, as far as they're concerned this is no longer a current product. On the web forums I have read that some people have got it working on Vista using XP drivers; I've had no luck with this so far. Under XP though it's fine:
Good points: Nice looking unit, works well, works as a MIDI keyboard in 'pro' music applications (Cubase etc.), velocity sensitive keys, octave shift buttons.
Bad points: PC keyboard has short-travel keys rather like a laptop but they are well spaced and you get used to them quickly. The music keys are awful - very spongy and like a toy keyboard. It works well enough for trying stuff out but you won't be playing any Bach on it. The software is basic but works OK.
Sadly it seems that Creative have dropped this product; perhaps it didn't sell very well. Let's hope they reconsider and keep developing the idea - and its drivers.