I had lots of IsaBrowns over the years, they are nice birds, a bit too dominant for my taste though. They think they are bigger then any of my other birds, wether its the geese, scovies or the turkeys, if it comes to close they get challenged to a fight by the Isa.
Also all my egg eaters I ever had were Isabrowns, never any of my other breeds, always the Isas.