I have been thinking about switching my 5 girls overs to organic feed. They are currently eating the layena layer crumbles. I am just about done with the bag so it's either I get the same that they have been eating and use it for the next few months or I buy a new brand kind this weekend. But I am not sure wether to go with the Southern States or Blue Seal. ( I'm only familiar with the Blue Seal for their rabbit food-I know that is good food as my rabbits are healthy.) For the chickens which brand do you think is better and why?