Okay, I just finished using my Hoover SteamVac Silver!
The results are: I like it a lot! The amount of dirt it pulled out of my carpets is just gross
and it was pretty light (20lbs) and easy to use. I like that there are two tanks - one for clean and one for dirty water, and that they are relatively small, about a gallon. Sure it means more refills, but it also means its not as heavy to lug around doing the refills, which I thought was very difficult with the store rental types. It did take about two and a half talks (probably two and a half gallons) to do my relatively small living room, but I don't think it took me much more than 45 minutes total to do the whole room, including moving furniture and vacuuming and what not.
The carpets from the first area I did are already dry, which is great!
Its not as quiet as I was led to believe it might be by some of the online reviews, but it definitely is less noisy than my vacuum. The boys are still hiding from it though.
It got out some spots that have been in my carpet since I moved in though, with just a few roll overs and some extra cleaning solution. No pre-treating ahead of time, though I'm sure that would have helped too.
Very easy to clean out - I could do it all in my sink instead of having to go outside and use a hose. And its relatively small - I can put it in my understairs storage area.
So overall, two thumbs up!