I originally bought this little keyboard to go with a Maschine 3. I eventually decided against the Maschine but kept the GX Mini as it was far from expensive. I have to confess that. so far, I have only used it as a keyboard, so haven't explored all of the advanced controller options available. However, even though I have a full sized keyboard sitting next to it, I've found that it is an excellent little keyboard, particularly when it comes to pitch-bend style lead lines. It seems that using a radically different controller to the one I'm used to unlocks a different approach to music making, unlocking unexpected creativity. I would recommend this keyboard for that point in itself.
The above might not be the case for everyone, but the build quality and features are great for a mini keyboard. It would take up hardly any room together with a laptop in a backpack, providing a highly portable system.
And of course, at the price, you can't really go wrong.