I bought it as an extension to my keyboard (I am more of a piano player thus I prefer to compose using an 88 keyboard) . I really was not expecting for it to be use much, just to play around. However, I found myself heavily using it. It has a high quality construction. At first, I thought that because of the plastic housing it was going to be just a cheap looking instrument, but to my surprise it is very sturdy and high quality looking. I just love the feeling of the buttons and knobs.
Pro:
Excellent mobility capabilities. It is really easy to transport and works perfectly with a Surface Pro 4 Computer with a Core I5 and 8GB of ram. I found my self now continuing music production in airplanes, train and outdoors.
Cons:
It does not have a proper Audio interface. For the mobility part, it would have been really perfect to have a good Audio Interface so that you can listen with good quality on the go. Also there was random activation of some pads when I pressed hard, but then I realize that the sensitivity was to high. Problem was solved by reducing sensitivity slightly.