As others have mentioned, this hood is a good value -- looks good, not overly cheap in materials or workmanship, etc. I'm glad I bought it, especially at an under-$500 price.
The negative is mainly the installation instructions, which are hilariously incomplete in hindsight. Also... a bit dangerous. This is a pretty heavy piece of equipment, and the instructions (in Chinglish) tell you to use drywall anchors to mount the top plate against the ceiling! In other words, don't bother looking for a ceiling joist or putting in any custom framing, just drive these expanding anchors into the ceiling and screw them in! Absolutely dangerous -- there is no way those anchors would hold this thing securely: it takes two guys to lift the unit up while a 3rd puts in the screws. Drywall anchors would pull out in less than 2 seconds.
I added framing above the ceiling level, and big wood screws through the top plate, and it's pretty secure.
Another caveat: the instructions specify that you should drop the upper cover inside the inner cover (like a telescope), and then mount the unit to the ceiling plate. If you do that, you're screwed -- because there is no way to reach inside the top of the assembly and pull the inner cover up when you're done, which is what you need to do in order to screw it in. Fortunately, I experimented on the ground first and realized that, and added some baling wire pulls to the process so that I could get the inner cover up during installation.
Since others are succeeding to install the thing, I have to assume that pretty much anybody who takes this on is at least an experienced handyman. Don't do it if you're not going to find solid support for the unit, or aren't comfortable with techniques to shim everything level, etc. If you're a good DIY-er, this is a decent unit and a solid value. Just burn the instructions when you get it.