Regarding good breeds, I love my Ameracaunas but they are noisy....very very chatty girls. And loud about it, too. My buff orpingtons are super friendly, quiet (tho they do sing a quiet little egg song sometimes to announce how proud they are of themselves) and good layers. My Barred Rock is so inquisitive. Also a good layer and follows me everywhere. Only peeps a little when she sees me. My Rhode Island Red is kindof mean (we call her "Angry Red"), but I think it's just her. I've never heard that about others. They all seem to do well with the climate here. I do have a jersey giant, and she's quiet and a good layer, but I think the heat is hard on her in the summer. She seems to suffer more than most with it...doing a lot of panting and stuff. I've heard that the larger, giant breeds have more trouble with heat and it sure seems true in her case.
Hope that helps.