Im growing Northern Light right now, (check out my grow journal) and i have smoked it before. Really like the high, but im thinking of harvesting half early to get a more sativa high.
People have told me that certain strains produce a higher yield but I have proved to them that it has a lot to do with how its grown. I can get a minimum of one pound per plant off any indoor strain so I dont take any notice of how much anyone says a certain strain will yield.