How does it perform on the exterior of cars?
What concerns me about Dupray is they try to 'dupe' people - at least on Youtube - in to believing you can clean the exterior of a 'clean' car with their steamer and a hanging 20+' hose. I'd be curious how much PSI comes out at the tip after 20'. I tried commenting it on Youtube and they delete it. If they can do that, I'd be concern about what else they can do. The digital display is nice, but after seeing their video and having them delete my comment, I wonder if it's rigged to make it look like it puts out more PSI than it can.
If it were me, I'm debating about the Daimer Kleenjet 300CS and a separate extractor. The Kleenjet puts out less PSI than the equivalent Dupray and it has an analog display. But for all I know, that analog display probably puts out real readings. It doesn't look as nice as the Dupray, but then again they don't lie about their products. I'd have to say, after talking to a Dupray rep over the phone, he was a bit more straight-forward stating their products can't really clean the exterior of a car.