I doubt the CSI just S1'd these plants and started selling seeds.
I believe their S1s are S2s; maybe even S3 or S4.....basically a selection they made from their original reversal; reversed again for a higher percentage of likeable phenos.
If they truly S1'd and started selling seeds; then I urge everyone to S1 their plants because I haven't seen any shitty results.
The chem 91 reviews may be legit....but also; there's a lot of breeders with the Chem 91....do maybe others just had better cuts compared to his?
And I've heard some genetics don't like being S1'd and Chem 91 may be one of those
The entire point of an S1 is to have the full genetics of the cut that was self-d. Every generation after s1 has more and more losses of traits and becomes less of itself. Nspecta does not re-cross his S1s, not should he, they are S1s on purpose. The reason you go to csi is to get what you order. He's not reselling skunk as diesel, he's not selling northern lights as cookies, you get what you order. S1s are for pheno hunting or breeding.
I've bought a good 30+ packs off of him and have always gotten what I ordered. S1s are neat, but I think his worked lines are better to grow (but maybe not to breed). I found some gotdamn fire in his mendo/urkle crosses, that deep purpling with a wide variety of interesting odors/tastes. Fruity, skunky, deisel, all in fairly homogenous and productive plants.
I've got some mendo purps x t-1000 in veg right now, and I'm already excited. See what we can get out of 4 beans. All total I've got ~14 csi beans in veg, some that were 5+ years old... And all popped and are growing strong.