Welcome to BackYardChickens! I have had RIR and Leghorns, and they were both great... my leghorn rooster was a monster! As big as a turkey, and mean as a wildcat... just not around me. I always had to go out every morning and boot him across the yard, or he would have had me sitting on a nest box with the hens. The Rhode Island Reds were very sweet of disposition, and the rooster wasn't too wild, but still a rooster.