Ckitto, the Kiyomi is a very productive fruit tree, I already have more fruits on it now then I do on the Shiranui, Tango, or Xie Shan. Also since its a tangor the fruit is large like a Shiranui, but it is not as sweet as Shiranui or Xie Shan. If you wait until its just ripe it does taste very good, but if you pick it to early (even though outside is fully yellow) it will just be very juicy but not much sweetness so its not on the above list.
Good to hear the Vista White is doing well. You should get fruits by 2nd year since the cuttings are all from fruiting branches on my tree.