Not sure about the dual purpose vs heritage, but all of mine have been much better than the mushy store bought chicken. The bresse had the best texture so far, but I wish they were bigger and not as expensive. A bresse-Jersey Giant might be in my future.We are processing these in March so I won't know until then, but everyone convinced me to cross my chickens to use for meat so I did. I have heard that dual purpose breeds are very tender and not as mushy as store bought chicken. I wouldn't know though since this is our first time.