I think we had one of those Norfolk Black turkeys a few years ago. We didn't get the best out of it because it was a bit too big, about 19 pounds, and I made the mistake of stuffing the neck end, which stopped the flesh cooking properly. It was hellish expensive too. It's what persuaded me not to go too large. Better to have two slightly smaller birds, as I said. You get more legs and wings that way too, and wow, two pope's noses!