CSI has a lot of OG crosses, using Triangle Kush and Irene, and they carry Triangle Kush S1s but are out right now I think. Cannaventure has several OG S1s, I'm growing out their Irene and LouisXIII right now. As for worked lines, check out Karma's Biker Kush or his Josh D OG. S1s are a gamble, but you can find a gem in a pack of OG S1s pretty easily. Million other OGs out there, but none that I've tried that stand out enough to mention. If you can find legit/healthy classic OG cuts, they are worth seeking out because some of them are amazing.