I can understand you being cautious with your car but at the same time, you really don't seem to be giving the shop a fair chance at all.
I would trust KDX to paint anything and everything I brought them and have and so have many people on here- including as I said, [MENTION=239]Turk[/MENTION], [MENTION=5]Mook[/MENTION], and others, with fantastic results.
Not to mention you may be potentially steering people away from a great shop, based on a "bad taste" left in your mouth, just from viewing a vehicle with a KDX sticker... who knows if KDX even worked on said car.
Check out [MENTION=239]Turk[/MENTION]'s R8's carbon fiber blades next time you are out at lukes and look at them close as the carbon on there shines incredibly well now after kdx took care of them with no peel in them, as well as no dust or specs in the paint.
If one of the cars you saw, wasn't perfect, and the owner as you said yourself, didn't want "perfect" work, I see no problem here as well.