Product review (5 stars): ... been using this hood for several months and I LOVE IT! I had a professional install so I ...
I have been using this hood for several months and I LOVE IT!  I had a professional install so I can't comment on the difficulty of instillation as others have.  I cook lots of smoke producing foods (Asian, Steaks, Stir fry etc.) and this thing handles everything on setting 5.  The noise is exactly what I would expect.  I have a 15x18ft kitchen.  If I was rating the machine on "ability to have conversation" level it would look as follows:

Q (lowest setting): I can have a conversation with someone in the next room easily
2: I am screaming to the person in the next room but I can hear them
3: I am now screaming for the person in the next to come into the kitchen because I can't hear them
4: I can hear the person in the kitchen
5: I'm distracted by the noise and don't feel like talking to the person in the kitchen but I'm doing it
6: I'm telling the person to get out because I'm cooking -- and my kitchen is super smoke free.

I still haven't figured out the auto off timer but that's just my laziness.