Bomand is correct, Kishu is good tasting. Its huge drawback is that it is a very small fruit. You will have to peel a dozen of them and eat them all at once to make it worthwhile. I used to have a kishu tree, but finally tossed my kishu tree upon the compost pile. My suggestion would be the Xie Shan mandarin (pronounced She Shan). I have been to several citrus taste testing contest and Xie Shan won all of them.