No, sorry keilau, I don't have the story. There's been some discussion about it on another board. At least one member, maybe two, bought them to try out and seemed happy with them. Don't know whether he changes the cup or buys without the cup mounted and installs his own. True, they aren't inexpensive and I don't intend to buy one but, they are tuned up and dialed in. And, as someone said on yet another board, collecting airbrushes is much less expensive than say, building cars or bikes or collecting firearms. So, if someone wants one and has the money to spend then who am I to tell them they don't need it. I'm not telling them they do either. Just that it's out there.
However, the first time that I pulled the trigger on my $73 Revolution CR that I got for $65 shipped on sale I immediately noticed a difference. But it wasn't overpriced so I guess I don't fit in that top 10%. Just your average Joe. Or...
Tony