Update
Well I got the machine working and have had a chance to use it a few times. Performance seems to be adequate, the water was about as dirty if I had used my Rainbow, however the power nozzle could stand to be a little more aggressive. The swivel neck is handy though. The bucket system is a pain though, and dysonman's comments were pretty much spot on about emptiying it. The air purifying mode is nice, however the website says you only need to run it about 20 mins to clean the air. I haven't had a chance to look at the motor but I'm assumed its a brushed motor, so it wouldn't be able to run continuously. Also, when the machine is running without the hose on it sounds like a drain backing up, so not necessarily something one would want to listen to. Putting the hose on does quiet it down a bit. Changing the speed doesn't really make the motor that much louder or softer, it only really changes the pitch. Therefore the air purifying mode is a bit louder ( in addition to the fact that it sounds like it has indigestion) than you would want, but the vacuum mode is pleasantly quiet. The power nozzle is louder than the suction motor.
Here is a sequence of photos of me dumping that water after I had used it today. I did find it prudent to go into the back yard and use the garden hose, rather than dumping the dirty water in the toilet and rinsing out of the bowl in the sink as I can do with my Rainbow.
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