I have the vapbong.
It actually comes with brass screens. It needs cleaning a lot and you have to mess about with needle nose pliers rolling and folding the metal screen into a cylinder shape to sit in the test tube.
In my opinion it's ok but not great. It hardly takes any herb, but not in a good way like the PD.
Haven't used it once since I got the PD a while back. (not intending to either really).
I would like to get the vapor genie however.