Product review (2 stars): If you pan roast or cook anything that smokes you will not like this vent hood
I've had this vent hood for three years. Overall I wish I had purchased one with a deeper lip. Any steam or smoke from the front burners just goes in front or gets caught by the switch plate and goes over the side.
If you pan roast or cook anything that smokes you will not like this vent hood. Even on 5 the whole house is smoky.

There are 5 speeds, I can't tell a difference in air flow between any of them functionally. Yes, it goes faster and makes more noise, it just doesn't make any difference with smoke removal.

Speaking of noise, it's both louder and quieter than they advertise. At the low settings, it's louder, on high it's quieter than shown.
Setting 5: 68 db
Setting 4: 68 db
Setting 3 (normal): 67 db
Setting 2: 66 db
Setting 1: 65 db
Setting 0: 63 db
Our house is 23 db when nothing is on. Very quite. All measurements were taken with an iPad sitting on the range.

It was installed professionally and to the instructions. Our house has 6" exhaust pipe, one 90 deg turn and  a 6 foot run to the the outside.

On the plus side. It looks great. It's easy to clean. Just pull the grates and put them in the dishwasher. And it's magnetic, unlike our fridge. Any cool magnets you have from before you got the stainless fridge will stick to it.