I just got rid of our Brahmas because they were loud and aggressive towards the other chickens, and very unfriendly to us (no aggression, just running away and not be tolerated to be picked up). I sold them and now my flock is so much more at ease and quieter.
Just to say not to take any breed recommendations at face value. Individual temperaments vary considerably. Things to look for, imho, would be cold hardiness and ability to forage and camouflage.