Ok, C99 is my personal fav!!! I am sold on the holy grail!!, I am about to pick up some f2's off Hemp depot from Joey Weed, grown his stuff before, no bros grimm but very good! The best version i had came from c-bay like 10 years ago, Dman I think. Anyway, c99 is def one of those strains that you def see an improvement in potency through increased veg time, prob why the clones get better untill the 4th gen, and yes this is true in my experience as well. (although I have never taken a clone past the 3rd gen as I prefer to grow from seed. I like to sample different phenos, I get tired of the same old!) You can finish a c99 with great results in 90 days easily. It is a very easy plant to grow which is a bit shocking considering the J Herrer in her, lol I guess a shiva skunk is easy to grow, no idea. There seem to be 2 main phenos, a pinapple and a lemon/grapefruit. I prefer the lemon grapefruit because of the taste. Even though it is lemon/grapefruit it tastes like oranges all the way through the bowl (proper cure of course) and has huge legs, like 3-4 hours of a clear up high and lives you with no hangover. Some people claim that it is paranoid inducing but I have only experienced this once and it was far over smoking as this girl has a high celing!! Anyway, there is my 2 cents!!