Some of the experts here can correct me if I'm wrong but I think for the most part what constitutes a "good" smart weed from one not so good is based on the amount of seed it produces and not so much on it's color. My wife's uncles farm/pasture border areas are slam full of pink smart weed but it does not produce the volumn of seed per plant that a Penn does. It also colonizes so thick that it would pretty much shade out anything else good that might want to grow. So that particular pink one might not be so good. As for the white, the water pepper sw throws very few seed, yet the "nodding" sw grows tall and has multiple, large seed heads that produce lots of seed. I can't attest to the "flavor" of each but we all certainly know Penn gets the most cudos.