Product review (4 stars): A Definite Winner
It has been over seven months since we got this hood, and all of our first impressions have not changed.  First my take on the installation.  Broan provides good instructions, which you can get online before buying.  I didn't put in a 2 x 4 behind the drywall.  I saw there were 5 screw holes to secure the hood.  I used one stud and 4 wall anchors rated 40 or more pounds.  The hood is not going anywhere.  The only help needed was with the vent in the crawl space - someone had to fit the duct pipe in roof cap while I arranged the bottom on the hood top.  Not a particularly hard job.

Function: lights are very bright, blower is more than sufficient for our largish gas range, it has not been hard to clean, and the grease screen is easy to remove and clean.  No problems.

Appearance: really one of the most attractive and modern hoods around for my aesthetic (a stainless steel back-splash from the top of the stove to the bottom of the hood enhances the sleek modern look).  Since this was a remodeling job, we went from a ceiling hole for 10 inch duct to 8 inch duct, leaving a 1 to 2 inch circular open space to the attic.  I solved this problem by buying a plastic ceiling decoration for lights, dropped the outer flue, drew a pattern, sniped it out, and it fit tightly enough, that screws were not needed to hold it in place.  It looks a little ostentatious but better than the alternatives.

Value: simply cannot be beat.  The Broan Chimney Range Hood helped us realize our goal of economically taking a 1960's kitchen and transforming it into an attractive, functional, modern kitchen.

Negatives: the control switches do no slide easily, and the fan is on the noisy side.

In summary, four-and-a-half stars.