The cube that I received is a Zhanchi, for those who do not know, there are several versions of Dayan cubes, each with its little idiosyncrasies, and that it really satisfies me.
The Dayan cubes no longer have to prove their excellent quality, they are fluid and well finished.
Personally I have a little change by removing antipops, tightening the lubricant and a hair, and there perfect, but it's a matter of taste and all its settings.
To conclude, I am very satisfied with my purchase, and the missing star is because no one is perfect cube but it comes close a little!
Note to Amazon which, again, was doing his job very well, well packaged product, deadlines met, no worries, and even when he y ', the after sales service is great, thanks Amazon!