So the other night, while smoking for hours with jayrunner89, we got on the topic of "what the one thing effects smoking quality the most?". We came up with numerous reasons why the stem, shisha, coals, hole patterns, and heat management were all number one on the list, but i was curious to see what all of you had to say about the topic.
As a side-note, this is why i love hookah so much. Not because of the fancy tobacco you can get, or pretty pipes, but because of the discussion and social interaction that goes with smoking. People who you've never met before delve into awesome conversation and new friends are made... ok, enough of my side note..
Tell the community what you think is the single most important element of a hookah set-up.