My favorite chickens are the Midnight Majestic Marans. Their black feathers have iridescent green and blue coloring, truly making them majestic. They are sweet girls and great layers. My Buffs and Sussex girls are also very sweet, but the Marans, are by far the best layers and the most easy going breed I have ever had.
P.S. I live in Arizona, which is now hitting the 115 temps and they are doing fine. So if you are in a place where the summers are grueling, Marans are a very good pick. Just water and shade keeps them happy.