I’ve noticed firmer whites and higher yolks in my Isbar and Sapphire girls eggs... I love them all and every way. Chickie hawks rescue GF’s are production reds and they are twice to three times the size of my girls, but more watery. Still having some shell issues with one Isbar though... and Mrs Marans, her sis, and my Barnvelders girls are just perfect for omlettes! Which is what I mostly do because Andrew likes them more, as we don’t have a toaster for dipping toast into soft yolks. Great! Now I’m hungry...