No doubt BB is one of the finer smokes out there. I like it a lot. It won't impress you while its growing it until the final few weeks it chunks up nice and fat and the buds become super dense and hard as rock candy.
I'm only familiar with Djs and Sagamartha genetics. There oldschool but I can link you to my bank that still produce seeds with original lineages. Research those two breeders there well respected to people familiar with them.
RE Blueberry Muffins. I can't comment on that but going by the name it sounds like a hybrid? Chances are some of the typical bluberry "insecurities" won't exist? Probably better to check in on grows around the interwebs.