Product review (5 stars): Excellent hood fan
Bought it about four years ago.  At the time it was a bargain at around $400 and we decided to take a risk on unfamiliar brand.
It is very quiet, powerful, and easy to use and clean.
Selected it to handle fumes/smells from Chinese cooking that standard American style hoods cannot handle.
At lowest speed is very quiet.  At highest speed is about as quiet as the other hoods at low speed.
Cleaning was tricky until we figured out that all you need to do is put the stainless steel parts in the dishwasher for normal cycle.  They come out clean as new.  The stainless steel is of substantial gauge and maintains its appearance with minimal effort.
Electronic controls are easy to use and work well.  Touch sensors and simple marks for everything.
A nice touch is automatic increase in fan speed in response to higher temperature (as when a large pan boils without cover).  Automatically returns to pre-set speed when temperature drops.

We found their customer support to be very good.
A few months after installation the controls failed.  We emailed the company and the owner responded immediately.  A complete set of controls and display was shipped to us.  I installed myself following simple instructions that came with the replacement.  Soon the same problem was repeated.  A second set of controls arrived without a problem.
This time I spent more time during replacement and checked all the circuits.  Found out that the problem was not in any of the controls.  It was a matter of contacts that were not tightened properly during construction of the unit, causing intermittent loss of power.  Used pliers to tighten the contacts and never had any problem since.

Very satisfied.  Highly recommended.