I've never encountered 'weak' strains really. I recall having some strains stronger than others. Most notable to me was the penis envy strain. I'm not sure how often you are tripping on chemicals or mushrooms for that matter, but when I was enjoying trips on the biweekly basis, I found I needed higher doses. I was never one take take epic doses, and generally enjoyed 3.5 grams per trip, sometimes pushing it to 5 grams. I do recall with Penis Envy, 2 grams was easily rivaling 3.5 grams of other strains. I only cultivated cubes. I was interested in others, but due to being indoors it is rathering limiting without putting additional effort and work into cultivating other types.