Exactly what I, personally, needed.
If youre a proffessional keyboard/piano player, it might not be just your thing, but for me, after having a 64 midi controller that I barely touched, this little thing suits me just fine.
keys are soft, the sustain control is very handy, and due to its small size it sits perfect on my desk and obviously very mobile.
it doesnt make any sound by itself so that cant be judged, So all in all, I feel like its the right tool to make me a better keyboard player