Other than being twice as expensive as our house blend, there is very little difference. I always say that a sunflower is a sunflower no matter what color the bag is. A customer brought in one of these expensive bags of seed recently and here is what I found. They include four seeds that I would never use in my premium general seeds (white millet, red millet and canary seed and nyjer). I do use millet in my ground mixes to take care of the sparrows, dove and blackbirds. Canary seed, I do not use at all and nyjer is a finch seed that should be limited to use in finch feeders. Trying to put too many kinds of seed in the same bag, more often than not, leads to problems with less desirable birds.