I start with the positives: This hood looks nice and functions very smoothly.  It's everything you should expect from a simple range hood.  HOWEVER, the installation was a friggin nightmare.  The holes on the hood and the holes on the mounting brackets do no line up.  So, mounting the hood underneath the overhead cabinet was infuriating to say the least.  Also, the "outside top exhaust" (the top-mount vent) was in a different location than the one-year-old Whirlpool range hood that was being replaced, which makes me wonder why there isn't more standardization between manufacturers.  The difference in vent location meant more alteration (cutting) of the cabinet beyond what was originally done to install the first hood.  I can proudly say that I am a good handyman, and this project sucked.