I will like to break down this review into 3 Parts OUT OF THE BOX: Out of the box thus cube felt a little bit sluggish but it was extremely smooth. The cube had lots of live it it and the cube became faster after few solves. AFTER 1 DAY: This cube was becoming faster solve by solve. I was getting sub 15 Ao5. I would definitely recommend this vine to both beginners and pros. MAINTENANCE: This cube does not need that much maintenance but I would easily advise adding on some weight 3 or 4 since this cube would probably need it. Lubing once a month will do. To sum it up, this cube is I've of the best on the market and if you are thinking of the Gan RM, just throw all those thoughts out of your mind. I bought this cube in stickerless and the shades are really good and give a good contrast. Overall, you won't go wrong if you but this cube. I am impressed.