It's funny that you started this thread. I was just thinking the other day, "I like my chickens a lot, but boy those ducks have way more personality". I house mine in with the chickens. Sometimes I have to herd them into the coop at night, but most of the time they go in by themselves. They could, and probably would prefer to, stay out in the run all night, but my run is not critter proof so I lock them in the coop. As far as the eggs go, I do not taste any difference but I do appreciate the texture of duck eggs better. I've really gotten to prefer them because they hold together so much better. My mallard and runner have just recently started laying but my pekin has been very consistent this winter. I was also just telling my daughter the other day that I can't imagine coming home and not hearing those ducks. They have a contagious laugh!
Besides, chickens aren't that funny in a pool of water.

