Product review (2 stars): 2 star now, could be 5 star if the product's shortcoming is cured or improved
Just spare a few words first: Amazon rocks, I don't have to confess that I will be a customer forever,  as long as Amazon continues its top notch service, they don't have to ask you, you will beg them to be the loyal customers. Out of the 3rd party sellers return timeframe, with the help of Amazon, I did return the Az668as75 range hood to AKDY. Thx, Amazon. Youre No. 1!

Now here is why I returned the product, plus my limited review of the hood with a only a few hour of hands within 2 days of opening the unit.
In browsing the prior reviews, therere two elements most frequently mentioned: sound level and aesthetic appeal:
On my first test run after installation, I noted both.
1 this product has very elegant design; it is very decorative in the kitchen. I bought it because of its sleek, clean, modern appearance.  By this alone, I would give the product 5 stars. Plus the price is extreme lower comparing to other brands, such as Nutone.
2 it is very noisy in all 3 speeds (not just the high level), don't argue that because it has 760 CFM. I understand that the 300 CFM or less is much quite. The noise it produced is not the usual high power motor whopping sound, its sort of dry, lean or crackling sound. I originally thought it may be caused by my installation, such as not very tight end connections. So I checked and sealed everywhere with 3M mask tapes, but it is still the same. Then I thought it could be caused by the included wrap-foil -thin aluminum flex pipe. So I removed the whole flexible pipe, the noise sound is more or less same, and its coming from the main unit itself.  Then I put small thin sponge adhesive tapes between the wall and the unit trying to eliminate any potential vibrations (as a matter of fact, there is not much vibration at first place since the motor is not very powerful as I imagined)
3 It does not have a strong suction force to circulate the air as you  expected from a 760 CFM unit.  If you put an A4 paper under the hood, near the front part, it will hold the paper, but may fall down if in the rear half. I spray a bit of perfume on a hair dryer and turn it to low blowing and placed on the oven below the range. And I ran outside to my wall outlet. I did smell a bit and felt bit warmth. So it does moving the air, but not strong, you cant feel anything with your palm on low and medium speed level, but if I turned it to high ( F3). I did feel a weak blowing on my hand. (BTW, the distance between the wall outlet and the main unit is less than 3 feet in my case, likely the shortest distance in all the reviewers). Yes, 3 feet, no typo.
So with above high noise and very low power inherited in this product, I decided to return it. At very first, I attempted to ask the seller for a motor swap, but its hard to reach them by phone.
There are several minor things and thoughts I wish to share with viewers:
1 the touch panel looks great, but tricky, (I only test run limited times) sometime some buttons are insensitive, even you touch firmly, it doesnt work, randomly it will work. I thought it could be due to the fact I didn't remove the protective plastic cover of the panel, or other reason I cant tell.
2 the two LED lights are surprisingly pleasing, (unlike other reviewers remarks), daylight bright. (With such low 5watts bulb, its really bright enough,) and the location are still in the rear , which I preferred and I disagree with other remarks, who wish to move them to front.  Isnt that true the darkest area under the hood is the rear corner, but in upfront behind you, you would have enough light from your kitchen ceiling light or windows.
3 there are quality lags between the parts of this brand product. On one hand it represents the deluxe high end and trendy design,  each part, the glass top, the fine edge of the stainless steel units are all perfect and well-made and welded.  On the other hand, the assembling is really rough; I have to remove the 4 bolts, (which holds the glass top on the unit, because I was very careful and don't like scratch any of them, either the glass or steel face/panel. So remove the heavy glass, make you easy to install.) And I found 2 of their rubber rings were crushed by the factory installers. Plus the LED connectors were lose, and my first run, they didn't even light up.
4 so if the product goes to the hi-end direction, they shall pay attention to the total manufacturing QC/QA process (simply clipper to fix the LED electrical cable along the inside rim), not just initial, or the design. If it goes the opposite, it would be better for them to lower the consumers expectation, price cheaper with lower CFM motor.
5 It may worth more attention on the motor design, such as the blade/fin shape and material used to improve power and reduce sound. Plus adding a thin layer of sound deafening insulation will not only reduce the noise, but also contain the heat generated by the motor and exile them out rather than dissipate to the metal hood covers (of course you may argue that in winter they want warmth in, not out, so designers of this hood, please make it a condensing type hood, super deluxe, cool in summer and hot in winter, j.k.!)
My views are very limited and based only on my initial several test runs, I didn't use this hood in real day life and make the more long run observations.  I love this hood and I hate this hood as well.
Potential buyers of any AKDY products shall make their own judgments, esp. pay detail attentions to the series models. They have so many models for different markets. (Could be USA, UK or other EU?). Its unique, elegantly designed and well made (mostly), it makes you kitchen glowing and attractive.  You cannot buy this type of products elsewhere, esp with such low price.  You don't have other choices if you favor this type of range hoods.