Review:
Out of the box, this cube was not that impressive. That doesn't do much justice though, because almost every time I've gotten a new cube intended to replace my main, I liked my old main, that was set up, better than my new cube, out of the box. I immediately started playing with the settings to better the corner cutting. The first problem is that you can't actually get great corner cutting on this cube. The other problem is that corner twisting is easy. It took a while, but eventually, after adjusting the springs, screws, and magnets, lubing the core and pieces, and breaking it in, I actually got the performance pretty good.
Details:
Out of the box:
Corner cutting: Max: 1 piece(45˚)[bad] At ease: 1/2 piece(22˚)[bad]
Corner twisting: easy[bad]
Feel: fast, dry, hollow, airy, tactile, bumpy
Reverse corner cutting: Max: 2/3 piece(30˚)[good] At ease: 2/3 piece(30˚)[good]
After setup:
Corner cutting: Max: 1 1/5 pieces(53˚)[pretty good] At ease: 2/3 piece(30˚)[okay]
Corner twisting: moderately hard[good]
Feel: controllable, wet, hollow, airy, tactile, bumpy
Reverse corner cutting: Max: 4/5 piece(36˚)[great] At ease: 4/5 piece(36˚)[great]
Advice:
Do not take off the cap on the red, white, and blue corner (the corner with adjustable magnets in it) as sometimes the magnet adjustment mechanism can explode and you have to find the tiny little mechanism pieces and put them all back together in the cube.
Summary:
Overall I think this is a cube with good everything, however, there is a tiny gap left where the cube cannot corner cut. This is true on almost every cube, but since the reverse corner cutting is so good, and the regular corner cutting is bad, the gap is in an area that is more common to be corner cutting in, so you will get more lockups while solving.
I hope this review helped you :)