We had a trio of sultans for awhile. The roo was mean and the hens were ditzy. They laid pretty well. One thing we couldnt get away from were the white earlobes, every sultan I have seen has had white earlobes. I think I saw someone in the SPPA with bantam black and blues, it was either there or in the Polish club. We crossed the sultan hens with a blue partridge silkie rooster we had and got all sorts of cool crosses and just sold them as mixes. A friend in Montana crossed a porcelain D'uccle with a sultan bantam hen and got tons of unexpected chicks. Which if you were going for a new color I would suggest the d'uccle, the main differences in the two breeds are the 5 toes and crest but the vulture hocks, leg color, beard is similar and it would only take a couple generations to get the crest back.