Right now I'm using a machine to administer my doses but recently my machine has been incapable of "getting me there". I have been convinced to get a vapor genie but have a question. I'm waiting to get the glass when I get paid but I have present money that I could start with the classic and in a bit upgrade to the gvg. But I have a question. Is the classic just as good as the glass only with the added disadvantage of not being able to see the smoke or are there other disadvantages. Though for me that's kinda a big one