There was one comment that I meant to make. If anyone has the older model such as what Turbomaster posted, take care of it and hang on to it. I got that one when it was first introduced on the infomercial and had it several years. The only reason I don't now is that I dropped it down the stairs leaving it "totaled".
The newer style is every bit as good, but there is one design difference. On the older model, the switch to toggle between scrub and extract mode is right on the handle. Very convenient to do with your thumb. On the newer models, it is a dial that you turn on the base of the unit meaning that if you're tall, you have to bend down to do it. Not the end of the world, and nothing that you'd even notice if you weren't used to the older model.
One other comment, my newer model has the hose and cleaning tools that you insert into the machine (reminiscent of a Convertible) and they actually do work, even if not perfect. But decent at cleaning behind the toilet and in other tight spaces.
Chris