Hello chakster
Comparing the two is simple.
The ZYX Universe ll uses a plastic body, which is open on the sides. There is very little 'vibration' coming from the body of the cartridge. It is therefore very open and clear. For me it is as true to the music as any cartridge I've ever owned. I listen to everything from Dead Can Dance, to Dire Straits, Black Sabbath, and onto Mahler and Janos Starker on cello. Nothing can unnerve the ZYX.
The Miyajima is a completely different animal. My Kansui reminds me of the Koetsu's I've owned. Gorgeous, gorgeous, gorgeous. When my wife and I are in the mood for female singers, this cartridge gets mounted onto my 4point. Did I mention it's gorgeous. The wood body of the cartridge ads a warmth to the music which is addictive.
Therefore: are there other cartridges which 'claim' to use a different style of magnet assembly design.