I have a young mixed flock of 2 Barred Rock, 2 Silver Laced Wyandotte and 2 Buff Orpingtons, plus 1 Buff Orpington Cockerel. I ordered them as day old chicks from a hatchery so they have grown up together. So far they have gotten along well. Each one definitely has a unique personality, but I have found that the BR even as day olds were friendly and rambunctious. One of my BR is the top girl, she's not overly aggressive, usually the stink eye works very well.The other BR is friendly to everyone. They are talkative and curious. One BO is shy and sweet, the other is a character, her name is Lucy, she is a bit smaller than the others but has a bit of spunk and devilment in her that is just charming. The Wyandottes are pretty (I think, even though they are hatchery) and chatty. I originally wanted Australorpes, but the hatchery didn't have them when I was ready for my chicks, so I got BR instead. I have enjoyed ALL of them immensely.
As said in the previous posts, it really is up to you. If you really want BR go for it. Just don't be surprised when you want MORE!