We mostly mixed our own, very similar to what foggy just posted or just used PPT by itself. The couple times we used BOB mixes, I thought they were a good value for small plots. We used the Frigid Forage Big-n-Beasty Brassicas and the Antler King Honey Hole and they both grew well and our deer ate them to the dirt just like all other brassica we planted. I don't usually recommend BOB mixes of anything, but for a guy just trying brassica on a small plot I think they work fine, at around $20 for a half acre, you can barely get seed at the co-op for that price. Most co-op's do not carry the fancy new varieties, so if you want to try any of the improved varieties, a BOB seed mix with the types you want is a viable alternative.