The Kkmoon is a different build from the PZ brushes. They are heavier, and maybe even have better finishes, but at least in the samples I have on hand, don't tend to work as well, or "feel" as good... The best side feed option I have found so far is the Master SB86. It is the same build as the 2cc and 9cc Pointzero brushes that I have written lots about. I have a bit more info on this brush on my FB page - https://www.facebook.com/pg/davegs.airbrush.exploration/photos/?tab=album&album_id=1078632708908983 It can be a pretty nice brush - the one serious drawback is that is is quite long, especially in front of the trigger.