Corner cutting is decent after I loosened the screws about 3/4 turn each side. Turns well. Outside magnets are on the weaker side and inside layers have stronger magnets. Overall, you get what you pay for and the Yusu is okay but if you are just getting into 4x4 and want a cheap cube w/ magnets, not a bad buy.

Recently got a whole set of 4, 5, 6, and 7 cubes based in large part by JPerm's end-of-year recommendations, but was unfortunately not particularly impressed with the Yusu 4x4. The out of the box experience is good, but just... good. In comparison, I was very impressed by the 5x5 and 7x7 choices I ended up with so it felt like a letdown by contrast.

Maybe with some more setup, better lube, and breakin I'l appreciate this cube more, but my initial impression is only a little bit better than mediocre.