Landraces are where things started, the original cannabis plants nature created. All the weeds you get today in shops started long time ago when people started to breed those Landraces.. Durban Poison is a Landrace for example (not that the Durban Poison you get in shops has anything to do with the Landrace.. People love to abuse Names, like the moron calling his weed Hitler). The key to good weed are genetics.. it counts who was the father and who was the mother. If you don't know the origin of the genetics, you waste your time in 99% of the cases... wind pollinated seeds are a lottery and mainly a waste of time.