I have a single Grapefruit (Female Seeds) that I like a lot. Reports I've read say it's tall but mine is quite short, different pheno or stressed from cold, I suppose.. Big, dense, sticky buds at 6 wks. and smells really good- sweet, grapefruit-like, can't wait. This is my first time so I can't give you a smoke report but it looks like a keeper so far. Easy to grow, doesn't like a lot of nutes.
I have no experience with C99 or SSH.