I love coneflowers and have quite a few varieties that I like. A friend of mine who has an acre of fabulous gardens can't grow them to save her soul. They seem to be a very finicky plant for me, and that's the newer varieties. Some come every year and others pop up when they feel inclined to do so. Some years they are big and bushy, and other years they don't do as well. I really love them, so I gladly put up with all their little quirks. I also find a lot of different names for plants that look like the same thing. That Cheyenne does very well for me, and it does get many different colors on one plant. I try to buy them when they are blooming so I know what colors I will be getting, and that doesn't always hold true each year. I guess you have to go with the "trial and error" thing and find what works for you. They are a very favorite plant for me, so I try new ones each year.
