I use just enough for 1 or 2 puffs on my Dnail SiC Halo (that is my daily rosin driver), I find I need more product when using a banger to get the same full toke that I enjoy and find it easier to maintain than quartz/ruby even if the flavor might be a bit better on the ruby insert.don't you still have to kind of keep toking away once it starts producing vapor though?
The Wand is close with its smaller dish for being frugal.