Lisa,
To address the flying question first, most domestic ducks can't fly far, if at all. Some, like Rouens, are simply too big for their wings to support their weight. Others can fly farther, but they typically don't because they know where their next meal is coming from. I don't know of any that will "fly" as far as taking to the wild blue yonder like a Mallard, but all of our ducks fly to some extent. They like to go to the hill in our backyard and get a running start to fly to the bottom, and some stay in the air longer than others. It's hard for them to get much lift otherwise, and none of ours has every flown out of the yard.
For the temperament and egg production, you might want to take a look here-->
http://www.metzerfarms.com/DuckBreedComparison.cfm. Just keep in mind these are generalizations, and not all domestic ducks are listed in the table. For instance, Khakis are listed as "nervous," but my favorite little girl is a Khaki and anything but nervous. She's my most affectionate duck, and she's also one of the dominant ones in the flock. Buffs are listed as "calm," but two of ours are sort of skittish and one is sometimes agressive, especially when she's broody, which is almost all the time. One of our Anconas is friendly and loves to eat from our hands, while the other will have no part of it regardless what treat we're giving.
LOL. That was my long way of saying, "It depends," but I wanted to give examples. Typical breed characteristics never apply to any breed 100% of the time. I've known pit bulls that were sweet as pie, chihuahuas that were brave and not at all yappy, persians that hated people and were afraid of their own shadows, etc.
Part, and only part, of any of this will depend on you. Ducks kept together aren't desperate for human companionship like dogs/puppies. If you get them and just put them in a pen, they're not likely to be what you probably mean by "friendly." You have to work with them, preferably from a very early age. Even that is no guarantee. Our Anconas were hand-raised like our others aside from the Buffs, but they have completely different temperaments. There unfortunately aren't any guarantees no matter what breed you go with, just a better statistical chance with some breeds than others.