I gotta say, I was pretty impressed with it's quality considering that it only cost me around $10 USD. I just bought it for the curiosity of the glow in the dark feature, nothing else. It turns very smoothly and can cut corners very well. Even though I'm no speedcuber, I can say that you can speedsolve with this one pretty easily.

Now to the glow in the dark stuff: At first I was very disappointed with it because I tried it with absolute darkness and I didn't see nothing much. I went on Youtube to find videos about it and found this one that showed a guy pointing the cube at a bright light for a few seconds. Eureka! I didn't know that you had to "charge" the cube with light for it glow. I tried it myself and now I could see it glow like nothing I've ever seen. Now I'm impressed.

So, on top of it being so good with speedsolving, it's also very good at glowing in the dark.

                            (Click to Enlarge)