If you are primarily wanting to produce food, the jumbos are what you want. Large and vigorous, they excel at producing gourmet quality eggs and meat. Most people that try quail eggs agree that they taste even better than chicken eggs. They are reputed to be healthier also, but I don’t know if those claims are accurate.
These are colored like a wild coturnix, with additional brown genes. At maturity, they can weigh close to a pound and their eggs are large to extra large (for a quail). This line originated from James Marie Farm, by way of Southwest Gamebirds.