@eastcoastmo , funny you say that about G13's C99 because I had a very similar experience. It was the absolute worst plant I have ever grown, even worse then the mexican bag seeds I used in the beginning. It didn't even really look like weed when it was done, and had hardly no smell, with no potency. I wish I had a picture of it, but G13 gives C99 a bad name, IDK what the hell that stuff is but it is NOT C99. Because C99 from Female Seeds is one of my all time favorite strains (easily in top 5) and it is not even similar at all to that trash G13 has. So if you never got around to growing one from FMS give it a try and you will be happy you did.
But other then G13's C99, the strain I hate the most is whatever the Mexicans are growing in their big fields to ship us that brick weed. Most of it is so full of stems/seeds that only a little over half the weight is actual weed and I bet it'd be lucky to have 4-5% thc. I don't understand why these Mexicans keep growing out their shitty hermaphrodite strains over and over each year. You would think it would make a lot more sense to order some good strains to grow and make their own F2's of those seeds, or heck find the best of the bunch and take 1000s of clones off each of them. I know they don't really care because it will sell no matter what, but it is absolutely NO extra work growing a good reliable strain over the crap they grow. Plus if the Mexicans were growing out Blue Dream, Chemdawgs, Northern Lights, Green Crack etc then I think a lot more people would start buying their crap and they could even charge a good bit more for it. It didn't take me long to realize it wasn't worth growing out the stuff they have now. While what I grew was much better then the stuff I bought, almost all of them I grew turned hermie in the end.