My buddy grew Ch9 Jack, Afghani Milk, and Vintage.
The Vintage grew all retarded with buds that had no crystals at all and a 1/10 for potency.
The Jack had nice bud structure, but lacked the potency I was looking for. I'd give it a 5/10.
The Afghani Milk produced the best buds out of any and was decent at 6/10.
Overall, I was not impressed and don't plan on suggesting Ch9 to anyone. Check out Sannie's instead.