I have the KISS wind gen. I did all the research about 3yrs ago and decided the KISS was the best for my situation. IMO, it is top of the line for the Caribbean type winds. After all, it's built in the Carib for the Carib.
It can get noisy but that is when the wind really starts blowing to much. I can simply flick the switch and she shuts right down. Then it's easy to lock it with a safety line over the prop.
It's not so good for low wind.
I highly recommend it for the right situation.
Todd
s/v Hestia