Amazing. Out of the box it was not amazing. But after tensioning it and lubing it was a main killer.
Setup:
Similarly to most moyu cubes, this cube works well with a variety of lubricants. Out of the box, the tensions were pretty loose, but at least they were even. I tightened it about one wrist turn, which worked pretty well for my turning style. I would recommend setting the spring compression to the 5th or 6th click. This creates a fast yet controllable feel. I lube the spring and screw with weight 4, as well as lubing the tracks of the pieces with weight 4. For a piece lubricant, I would recommend a lower viscosity lubricant, although I also found weighted lubes to work fine. Now, break in!
After about 100 solves, this cube is AMAZING. Although this is a slightly older cube, it still beats modern flagships by a huge margin.