That's why this hobby is so fascinating. To me, the YG's detail and transparency are means of communicating emotion and musical enjoyment. And they're (more than) perfectly adequate at that.
As for the Zus, I wouldn't listen to one if given to me for free.
Again, the ol' "horses for courses", etc, and the reason why this hobby is so interesting. And just talking about these things in forums cannot really convey what the systems will do, as emotions are intrinsically very personal, and what might make one laugh, might make someone else cry.