I can't say I have a ton of experience, but I do have a nine day old Mallard duckling named Pyrrhos(getting her some companions on Friday or Saturday). She is very talkative, but I don't mind the talking very much. In fact, it's pretty refreshing, as my dog is a very quiet animal. I quite enjoy noise, lol. I've heard from a lot of people that Mallards aren't cuddly, but Pyrrhos has been very clingy and cuddly. That may change once she's out and free ranging, though. She doesn't follow me around like a lot of people talk about, but she does hate to be alone, and will definitely pitch a fit if I leave the room(even if my partner is with her). She is MESSY! But I think that's to be expected with all ducks. I probably wash her bed stuff once a day, and whenever she has companions, that will probably turn into two or three times a day(not that I mind, though). One thing I'm really not looking forward to, is her learning how to fly. I would definitely count flying as a con, lol.
Overall, I'm really quite happy with Pyrrhos. (: Her mates will be Magpies, which I'm hoping will prove just as rewarding.