All of the above plus the major point that stands them alone - they are unique! No other waterfowl have their unique combination of characteristics including personality. And they are a pure breed in the true sense of the word. They may come in different shapes & sizes, but they are all still Muscovies. I think another point that really stands in their favour is that they are so quiet, both noise-wise & temperment-wise. No crazy flapping hysteria from the sedate Muscovy. I usually have to watch that mine aren't underfoot when walking amongst them. They really are a people friendly bird. And no need to worry about close neighbours with this breed - neighbours certainly won't know your mussies are there from the noise they make.