I've had incredible luck with poss. hets. I proved out (so far) 7 of 9 50% poss. het lavs and I'm still working with the other two. I also proved out 5 of 5 66% poss het pieds. I just proved out the last poss. het pied, I got five pieds and one het!! These were all from Steve Roussis. I joke with him that he sells hets as poss. hets. These poss. hets have really helped with my lavender and pied projects. If you trust the source I believe poss. hets are a great way to get into expensive projects.