I, too am searching for a high cbd strain. and too, have been researching for just a few weeks now. most of the info i have gleaned about high cbd strains have all come from this forum and specifically this thread.
having said that, i ran across a strain on bonza seeds that claims to be high in cbd, royal medic. i haven't had any, so this is not an opinion of something that works, only a report of a new discovery i have made that i want to research further. i have ordered seeds from several seed companies and so far, bonza is the only seed company who has been able to get me my order intact. these royal medic seeds are also very nicely priced. and feminized.
so..........
hope this helps someone.