There's no difference, it's just a personal preference. Even egg color is no longer an indicator of "better" eggs, since the food industry figured out they can add marigold extract to tint mass produced eggs' yolks more orange. So now the store-bought yolks and my backyard yolks are the exact same color. And even if they weren't, it's just color and it doesn't directly equal better nutritional quality. My chickens don't free range and get treats very rarely, because they are prone to obesity. In the summer I cut them greens from the yard, but in the fall-winter-spring, they only eat poultry feed, so not much difference from what the chickens laying eggs for the grocery store eat. So I can't imagine my eggs are really that much better, except that they are cruelty free and fresher. So what people are saying/imagining tastes so much better about homegrown eggs, isn't really anything about the quality or nutrition per se, it's just the freshness. And the peace of mind that the hens are living a better life. That's pretty sweet, too.