Hi Keith, Ive had mine for about 3 weeks now and yes it does a great job and above all it is easier and quicker, i now prespray and then I have the carpet brush head which agitates and sprays and sucks all at once.
Usually take wand or long reach stair wand to carpet after as well to get round corners and door bars etc
I use mine with a T-M on about 300psi so your psi would be fine and i guess as long as you make a 2nd vac pass you should be fine
If you have the money to spend then go for it, but it is something you can do without and about 2k is alot of dollar to spend
Ive no regrets though
Down side to it is the handle is a little flimsy and wide (looks like a harley!) and it doesnt have a foot plate to lower the handle but is still easy to do, also on some carpets (mainly wool) it does leave a swirly footprint which needs raking or wanding out.
Happy decisions
stu