We installed this in a new house and really like how it looks.  At the price it is a good value and seems well made.  We like that it holds a magnet for hanging pot holders on the side.
But the claims of the fan noise being equivalent to a whisper are not true.  On the lowest setting it might be 50 decibels, not 30.  The sound level was important to us and thus the 3 rating.  Other than that, it is a great hood.