Honestly I think for quiet Muscovies are the only certain choice. With ducks it depends on their personality from my experience, they're always capable of being loud, but some don't quack often, some are more demanding. If you keep them happy they're quieter, I have a loud Cayuga but usually she starts quacking because she saw someone and wants them to come out and bring treats or food. I have a chatty Muscovy but her loudest is still not loud at all, it isn't disturbing, wouldn't bother neighbours or anything like that.
They can fly, but clipping their wings is easy as long as you can handle them. I get about 75-85g eggs from them, only their first year of laying so I don't know how many yet. One of my Muscovy girls (everyone's favourite because she's a total sweetheart, follows us around the garden greeting us, very tolerant to being held) has laid around 70 eggs so far this year, started in winter (I'm in Australia), has only taken two days break since she started, one day of two eggs. They're not known to be the best for quantity, but out of two Cayugas, one Ancona and two Muscovies, the Muscovy who's laid 70 eggs is by far our best, then the Ancona, then I think the other Muscovy has started laying, and the Cayugas haven't consistently started, one got egg bound twice, the other has had a shell-less egg.
Good luck! I hope you're happy with whatever you end up choosing
