I have a puzzi 100 on my van, its a great bit of kit and I use it for emergencies and spotting.
I think its great, because the end of the wand is transparent plastic you can see it sucking up the dirty water and you can keep going until it runs clear, so it must be clean then right!
To be honest I dont know the spec of the puzzi 100 but it does only come with about 7 foot of hosing so even if the vac is the same you would get in a henry its not going to do a bad job on a small area, it is in all honesty not practicle on anything but spotting or short term emergency situations for a number of reasons:
a: If you cleaning stairs you have to balance the puzzi between you and the next step as the hose is so short
b: Your back will hurt after about 30 minutes of using the floor wand
c: You have to empty it every 10 minutes
d: A customer will never say to you "wow thats massive I never thought it would be that big" and are more likely to say "are you taking the pi$$,Ii could of hired one of them and done it myself"
That said I am sure the OP knows what he is doing with all his years experience.
Tony