i have noticed i get more high when i hit my bong. the weed i get around where i live is not that great, but usually the first couple times i hit from stuff off a new bag, it works really well! other than that, i just power down a few bowls in my 2 liter coke bottle bong and i'm good, even with cheap weed- and i think i've smoked every day for the past year... at least lol