Hope you went with another brand! Even though this is old, maybe the information will help someone else. I purchased mine from Home Depot. Mine is less than two years old and the lights died. When I contacted customer service (4 emails, only one response) and then called (routed around their system) I finally did online chat and got a hold of someone. The person knew immediately what my issue was, i.e. it's a known issue and proceeded to mail me the parts to repair it myself. I did contortions on top of my range to try to swap out the parts, and they still don't work. Their customer service is a joke. They expect you to watch their videos and figure out what to do. I contacted them again to try to get a reference to a repair person, and they have none and basically said "I can't help you and good luck." SKIP IT. BUY SOMETHING ELSE.

We've been happy with our Zephyr; we have the Anzio in the 30" size. This is a flattened pyramid. Lighting is nice and bright when I want it. The fan is operated by push buttons. I rarely use the high setting because it is the noisiest. For the small amount of time I use high, it is an acceptable noise level.

We bought a zline on Amazon (30 inch) due to budget constraints, and although the specs said 640 cfms, I doubt it is anywhere close to that. It just barely moves the air around, and is so loud I can't stand to cook under it! I just don't think these bargain vent hoods are worth the savings, and wish we had ponied up for a real hood. Of course, ymmv. That said, you might be safer purchasing from Costco with their generous return policy and generally decent quality of products. Hth

I hope everyone here knows by now that CFM values are those of the blower operating in free air (zero static pressure) and not in a hood, connected to the outside by a duct, and trying to pull air from a residence interior with varying success depending on the nature of the make-up air supply path. So what you see on the spec sheet is not what you get. Also, as pointed out by others here since at least 2010, sound levels of hoods have no official or manufacturer-wide standardization of measurement technique, and so should be considered indicative, but not directly comparative with those reported by other manufacturers. One hopes that they are comparative among other units of the same manufacturer's offerings. One would probably have to physically view a Wolf hood inside the baffle space as well as outside to gain some appreciation for differences. Some of these will be metal composition, thickness, and welding quality, as well as strength and baffle effectiveness and noise. However, not all manufacturing costs are sheet metal and motor winding wire; for example, Wolf will answer the phone and try to help (not that much help should be needed for a hood), so their overhead will be higher than others stamping out hoods internationally without real national support. I recall reading other comments over the past year or so related to Z-Line, so a search with Google or other search engine with this site specified may be productive.