I've had very negative experiences with Orpington roos. They were aggressive to each other, and the one I ended up keeping was so rough on the hens that they ended up with bare backs, torn feathers from their heads, and infection from wounds on their backs. Then the rooster (BO) got human-aggressive, too. After he spurred me in the thigh while I was carrying the baby on a carrier on my back, he became chicken stew. I won't try a BO rooster again.
The most consistently gentlemanly roosters that I've experienced have been black Australorps. They were gentle and protective to the hens, and never displayed an ounce of aggression to humans. The breed also has a lot of great qualities for a self-sufficiency scenario: the hens are solid producers of eggs, the hens have a high tendency to get broody and are great mothers. I've also been able to stick day-old chicks that I've bought via mail-order under a hen that's been broody for a while, with 100% acceptance of all chicks in five broodings. The breed is considered dual-purpose as well--sufficient size for meat as well as a steady stream of eggs.