I have saxony ducks on a 1/4 acre. They arent loud IMO. A lot less loud than dogs. The girls were louder when they were teenagers but now they don't make enough noise for people to hear outside the yard.
I had muscovies as I heard they were quiet and I was concerned. The male was very aggressive to my other animals and they just aren't a very productive breed .(50 eggs a year)
I decide on Saxonies as they are good layer (150-200 eggs a year) and are big meat birds. The additional eggs means eggs to eat and lots to try to hatch to raise for meat.
I have four females and one male, they haven't started laying yet, should happen soon.
I've eaten muscovies and Saxonies and the Saxonies are better tasting too IMO. Very much like goose, so much so we've decided to delay getting more geese (lost our pair to a predator attack)
Between meat rabbits for white meat and ducks for dark meat and eggs , there isn't much need for chickens or for that matter other livestock.
There is a FAO paper on symbiosis of raising rabbits and ducks for backyard farming. They used muscovies as they were dealing with hot weather countries in Central America and Africa. If you don't have the heat concern I'd suggest a more productive duck.