Arturia KeyLab 49 by lucasasdelli
This master keyboard is quite versatile, but its construction is poor and doesn't guarantee any heavy-duty usage.
The keybed is basic plastics and prone to get broken; but the worse behaviour is that white keys, by acting the aftertouch, does bend (!!!) down, thus showing that the white keys too are too thin and made with light material.
On my personal experience: bought and immediately sold after a couple of days.