I agree with what's been said above. It's all in your personal taste, space, and funding limits. If there are limitations to money and space, you might choose one, and make room for something else. If they are really alike and you really love them and one blooms early, and one blooms late, you get the long season to enjoy that look.
Black Magic Woman blooms early, and Sharp dressed man blooms later (mid season). They are similar in color.
