I have to say that I quit, not because I didn't like the highs they gave me, more so because I could smoke a shitload and hardly catch a buzz anymore. To this day I can't smoke natural bud more than a couple times in a row without my tolerance skyrocketing. It's kinda fucked up. By day 2 of smoking bud I have to smoke like a whole gram as fast as possible to even feel anything and on top of that it only lasts 10-15 minutes. It really blows goats.