The bad:  We had this range hood installed for about 1 week and something in the motor cage came loose and damaged the unit.  

The good:  The 1-yr warranty that comes with the device was good to provide me with a replacement unit.  Not sure how well (or how not so well) this unit will work after installation, but I'm hopeful it will work fine.  Maybe I just received a lemon?

UPDATE:  So far the replacement range hood has been working well.  The flaps inside the 1st unit that allows air flow to the duct had snapped off and fallen inside the motor cage.  That caused everything else to break and fall apart.  The new unit has been working well so far so I'm bumping up my star rating.