They are HUGE birds!
LOL just had to tell you that.
We had a beautiful new jersey giant black rooster, and he was BIG!

Veru pretty, too. Roosters can become aggressive, but not as bad as some breeds, like the RIR. Lots of fluffy feathers. Not sure about the hen's personality, but roosters seem to be good family birds. Ours sometimes pecked us if we patted his chest, but he never really chased us. Like I said, BIG BIRDS!!!
Good for breeding. Personality:
*BIG!!!*
*fluffy.
*blacks have green/blue colored tail feathers, very pretty!
*friendly(depending on how you raise them).
*good family bird.
*good manners to hens.
I would recommend this breed to a lot of people. Hens lay large-X large brown eggs, and this breed is hardy through cold and warm seasons. Lays all through cold weather, too.(winter, fall...)
I wish we still had our jersey giant rooster. But a weasel got the gorgeous boy, along with his beloved hens.
But anyway, a very great breed!