When it comes to iris (or most anything else, I guess!) personal likes / dis-likes tend to govern what we have in our gardens, and rightly so. Immortality suffers the poor branching, and form of many of the earlier remonants.so it doesn't make the best 'garden subject". Personally, the "bullet proof" nature of the older re bloomers is as important to me as the possible re bloom. In my climate, at least, Immortality, Earl Of Essex, and others from that "time frame" stand up so well against borer, rot, and even leaf spot, that they will always have a place in my beds......Arlyn