These are 4 varieties bred by our NZ Hort research "for convenience factors such as an easy-peel skin, and adaptation to New Zealand's cool, maritime climate" that are now on public sale in NZ.
(The wholesaler who holds the rights only retails in 4 inch pots strangely enough)
http://www.edible.co.nz/varieties.php?fruitid=25#KiwiCitrus Gold ™
I planted Kiwicitrus Gold a few weeks ago aka 'Bay Gold', a Clementine mandarin x Seminole tangelo hybrid, "It is also resistant to Alternaria, a serious rind blemish disease which affects the 'Seminole' tangelo."
Tell you more about it in 2 years.

However 2 years ago I planted Kiwicitrus Sunset a cross that has striped fruit. I missed out on fruit this year unfortunately as it is in a semishaded spot but have buds starting to develop so maybe next year. I am looking forward to this one!

The variety I did eat was Bay Sweetie (now Kiwicitrus Sweetie) and probably because it was it's first years fruit it was dry and smallish but well flavoured.

The Zest I haven't got room for yet...but when I see one on sale I will find the room somewhere.