yes, when you get technical, it looks like Greenhouse has a little bit of a monopoly on the 22% and 23% strains. Arjan's Haze #1 was tested at 22.3%, and his Hawaiian Snow was tested at 23.7%. Pretty much anything with the words 'Arjan' and 'Haze' in the title have been tested and shown that under optimal conditions they can all reach 20%. However, these measurements are relative, you know. as in 23.7% in relation to all other 60 cannibinoids. Technically a strain that tests at 15% THC measured against the rest of cannibinoids, but still contain more resin glands and has more trichomes than a strain measured around 20% THC could actually contain more THC, because the measurements are relative and plant specific.
Personally, I prefer something that is a mix of about 60%-70% Indica 'body stone', and about 30%-40% Sativa 'head high.' I think this topic is kinda rediculous... "STRONGEST STRAIN KNOWN TO MAN!" lol. It's all relative. not only the measurements, but different people react differently to different strains, and one strain may be the exact same 'strength' as another, while offering a completely different 'high' than the other one.
This being said, Have always wanted to try OG Kush, but as it is clone only and Californians seem to have a monopoly on it, it never seems to make it up to Washington State! For that reason I've been thinking of checking out THSeeds MK Ultra, as it is two 'clone-only' strains bred together. would even be good for breeding purposes! As you now could have a father thats half OG KUSH and half G-13. now thats some pollen I want my hands on!