In 2008, there was an independent blind taste testing of 8 heritage turkey varieties along side Butterball turkey. This was published in Mother Earth News, August 21, 2008. You can read the whole thing on line and I would give you the link, but can't seem to copy and paste a link here? But of all the varieties, the Midget White came in first with Bourbon Red coming in second, both receiving twice as many votes as all the other varieties. Butterball came in last, no surprise. So if you want them for meat, BR is a good choice although personally, if you brine and slow cook a heritage turkey? They are ALL delicious! For breeding purposes, if you breed two Slates to each other, you will get 3 colors---Slate, Self Blue, and Black. Some people like the diffrerent colors, but the Black birds tend to leave some dark staining on the meat from the feather pigment. Cosmetic only, so if you are only processing for yourself, shouldn't be a problem. What I do with my Slates is, I use a Self Blue tom over them, and that way I only get the Slates and Self Blue and no Black. I think there are variations in temperament, not so much within breed but probably different lines. My Slates are the calmest of all my turkeys. I have 3 different bloodlines of Bourbon Red, and the ones from Porter are calmer than the other two. They are both about the same size, and the Standard calls for the same size: 33 lbs for old toms, 23 lbs for young toms; 18 lbs for old hens, 14 lbs for young hens. But in actuality, unless the breeder is working to get the size up, the heritage turkeys tend to be smaller than the SOP calls for.