I absolutely love this cube. Not just because of the sheer absurdity of having so many layers, but also because it handles and turns so smoothly.
You may need to take it easy when solving it as not only is this cube a fair bit heavier compared to a 3x3x3, this cube is also susceptible to pieces popping out. While rare it is possible for pieces to come completely detached, though these can quite easily be pushed back in.
The stickers all use the standard Rubik's colour scheme and seem quite robust for the most part. A couple of mine didn't seem fully stuck down and so started to peel off when it came out of the box. Fortunately this cube also comes with a complete set of replacement stickers so it wasn't a huge problem.
Overall it's a cube that is a joy to solve and provides a great sense of achievement every time you do.