Mate of ours has a Kiwi and it is a mightily impressive unit. Good under sail, no problems in forward but reverse is an absolute revelation. That thing stops her in her tracks when you go reverse. Were I to ever replace our FlexOFold (with which I am quite happy btw) I'd definitely go Kiwi.
“Give a man a fire and he's warm for a day, but set fire to him and he's warm for the rest of his life.” Terry Pratchett