FB green crack is the plant that always grew best for me, so when I started breeding, it was natural to use it as the basis of my strains.
I use FB Blackberry and California Sno because they were the fastest finishing plants I ever grew - I actually did a grow journal speed testing several strains it's on here somewhere.
FastBuds Grapefruit was the most flavorful plant I ever grew, I love the sour taste, so I got included.
The Gorilla Glue wasn't supposed to be included originally, but I wasnt very neat in my breeding area at first, and so it got a little pollinated, and i got several seeds out of a bud, so I grew them out, they were awesome, so I used them in subsequent crosses.
Some people might feel like I'm "ripping off" FastBuds genetics, but, arguably, every auto breeder is "ripping off" Lowryder, so....
I've been breeding for 2 years, it's my favorite part of growing. I have 16 strains I'm confident in so far, and I have plans for more this summer and fall. All have been tested in my personal garden before public sale.