Tbh I dont think it's that important. I was reading something the other day that was saying that waitrose is now the only supermarket that's truly organic for meat, ad the others are now feeding their organic animals on foods that may be GM! Something to do with a shortage of non organic crops or something! And also, due to wind, the spores can travel in the air, so things get "contaminated". I don't buy organic really unless it's the cheaper option, bar eggs. Basically, just go for the best you can afford, as long as they get a good variety it doesn't matter if it's organic IMO!