There are many options when it comes to choosing eggs at the grocery store. One thing to keep in mind is that the nutritional value of an egg is consistent across most types, with Omega-3 eggs being the exception (these hens are fed flax seeds for the added Omega-3). Otherwise, it mostly comes down to personal preference.
As for free-run eggs, the hens that lay them are housed together on the floor of an indoor barn, where they have access to food and water throughout the space. In addition to their regular feed, these hens may also eat anything they find on the barn floor.
For more information on choosing the right eggs, check out our Guide to Choosing Eggs below!