I already have a medium phunnel hookah for personal use. (and yes, I can kill it by myself in one sitting
The large phunnel is for a 6 person home depot-style party hookah that a friend and I are making. I've heard all the usual stuff like just refill it when its done, etc, but personally, I have plenty of tobacco and I HATE dealing with refilling bowls once I'm, ahem, inebriated. I can deal with the little waste to gain the convenience.