Trevor geezer,
Soory abuot teh naem, it's teh way I tpye
(Not because the silly old g*t got confused)
I do not leave the machine on the van because I do not like running hoses across footpaths and it is so light I can take it on and off with one hand.
To answer the hammer-nut question, my other machine is more powerfull - anyway you know when you are useing too much power - the wand starts to behave like a knee-kicker
Set-up times are pretty much as per any other portable; I'm used to running two power leads anyway. At the end of the job I spend a little more time due to the fact that the dump valve cannot drain the last gallon and a drain plug has to be removed from the side of the tank and the machine tilted. However, because of the excellent water delivery, each cleaning stroke is performed a bit faster, so overall job times are reduced.
Strangely I have not done an upholstery job this month
but I did pull an old cotton print armchair out of a skip to play with. At 50ft, with two motors running it felt about right. With draylon perhaps I would have used the third motor, althogh with my prvious machine I normally used only two. Even with the CFR tool, with red(finest) jet fitted, at 350psi I felt the water delivery was excessive. At about the 250psi setting the results were as good, and at about 150psi it seemed to be performing just as well. Since CFR recommend 400psi to achieve atomisation, I think quite a bit more experimentation is required. It was difficult to assess dryness, since the chair had been rained on the previous day.
As you wrote - Phew.
John.