Product review (4 stars): Lots of range hood for the money, but it does come at a cost...
As another reviewer mentioned, I have somewhat mixed feelings about this hood.
The hood itself is extremely powerful and relatively quiet. At the highest setting it is not as loud as our old broan under cabinet recirculating fan unit.(see my notes later on about noise level tips). We steamed some crab and cooked popcorn on the stovetop and this thing takes the oil smoke and odors away very well. (note proper installation height from the top of your cooktop to the bottom of the fan)

It looks very nice. The glass is a nice touch and will make cleanup nice and easy.

As others have mentioned installation is a pain and the instructions leave much to be desired. Here are my installation tips:

Measure from the top of your stovetop to the top of your ceiling, then subtract 30-36" for gas range (I think electric might be a little less). If that number is less than 26" then you will likely be looking at a more difficult installation. The problem we ran in to was that the stainless steel (SS) sleeve was too long to allow the mounting bracket to be mounted directly to the ceiling. This left me with 2 choices- take the SS sleeves to a machine shop and have a few inches cut off (and cut off length from the mounting braces) or install the mounting bracket up in the ceiling (in the attic). I opted for option 2, though in hindsight I may not choose that option again. Mounting it in the attic made it VERY difficult to secure the braces to the main ceiling mounting plate and take care of some of the other mounting/installation steps. There was a lot of up and down between kitchen and the attic which added a bunch of time to the install. I also will need to install some trim around SS sleeve, adding to the install time. Your ceiling may be high enough to allow a "normal" install, but just be aware that you may have to make some fairly major adjustments to the installation.

A tip on reducing noise from the fan- Ditch the cheap plastic, slinky like connector that comes with the hood and use solid duct pipe (6"). The slinky connector will NOT last and create turbulence for the air flow. It will also collect grease and in my non-expert opinion eventually become a fire hazard. In order to connect solid metal duct the first connection needs to be an adjustable elbow because the fan connection is not in the middle of the unit so you need a slight angle to get the straight pipe up and out to your ductwork leading out of the house. Also, make sure that you make your duct work leading out of the house as straight and short as you can. This greatly reduces the noise and improves the efficiency of the fan. Also note that make-up air starts to become a consideration when you're talking 800-900 CFMs that you're trying to move. That's a whole other discussion that most people don't even think about. But, if you're fan is not working efficiently I recommend that you research a bit about that.

Bottom line, for the price you get a TON of range hood. The CFMs are more than enough for most residential applications (if installed correctly). But as other reviewers mentioned, there is a price to pay with a difficult installation (especially for lower ceilings) and nearly worthless installation instructions. I would purchase again, but take more time on the planning of the install ahead of time.

Just a note that I purchased this unit as a "scratch and dent" unit from an ebay seller for a little more than 1/2 the price and not from Amazon.