I say it over and over, but Hop Heaven has spectacular hops, including Centennial. At least, the Centennial I got from them a few months ago were great. Keep in mind, though, that Centennial is a hop that growers hate due to its variability and difficulty to grow. When asked if there was one hop they'd like to get rid of, every grower on a panel I attended named Centennial. But they also all said that it was so popular that would never happen.