I use to think...you go Volcano...or you dont go at all, but one of my friends just got the extreme vape for his birthday and I would say for the money its a good unit, although I just am not satisfied by vapor alone, i like all the effects you get from the substance not just THC's effects. Even after roasting an eigth in the volcano i take one fat bong toke and im just soaring. But to each his own.