We had some Nirvana PPP's, out of 10 that germinated we ended up with 3 fems.. Only good thing about that is they clone really easy. I'd say do the NLxBB, same kinda yield etc, but we had much more luck with them, out of 6 seeds we germinated, 5 fems 1 male, again clone very easily and i'm hopeless at cloning! Hope that help a tad..