I have to agree with waiting till they are a little older and see how their own individual personality develops. Some Roos can be mean regardless you just never know.
but I also have to agree with cybercat on determining how you are going to be raising your flock and what kind of living conditions they will have.
I have a BR roo that I just love. He's very observant when the girls are out free ranging and calls the girls very sweetly when he finds a tasty treat for them.
I have witnessed many times when my Colonel has noticed a hawk flying close that he makes a funny little trill and all the girls freeze and watch the sky too, and
when he tells them okay then they'll either go back to foraging or go to cover depending on his response. He's very protective when a girl raises a comotion he comes running
to check it out and make sure everything is okay.
He is not very social with humans, but he wasn't brought up that way either. He doesn't chase us or attack us, he will try to peck me if I go to pick him up off of his roost, but he's just conveying that he doesn't like the close contact, and some of my girls will do the same thing. If I walk up to him or near him he'll just back away untill he's at a comfortable distance. My chickens are not lap pets, they are just chickens that I enjoy watching and getting eggs from, they free range when I'm home and are in their pen when I'm not. My BR does his job and is not mean to the ladies and some of them adore him and follow him everywhere.
I raised two roo boys from my Br this fall and they were just like him, they were fearful of humans but treated the girls right and did their jobs of watching for bad things, the only complaint about them is one was a little more seeking the love making with the unwilling girls, he was also the more dominant of the two. THey were just coming into their
adolecence when I rehomed them and would probably settle down as they got older.\\
They were all very handsome roos with their barred coloring, I'll be sad the day my Colonel isn't with us anylonger.
I will say this tho, there are too many Roosters out there to be stuck with a bad, so if you get one that turns out mean or bad, and maybe they both will or won't, get rid of him and get one that you'll be happy with and one that treats the girls right and doesn't attack you.