Product review (3 stars): Room for improvement in design
Please refer to Brian C's review. I concur, and want to add a few more points.

I received mine on Friday, did some prep work on Saturday (like removing the old microwave/hood combo, measurements, etc), and spent the whole day today to install it. With help from my 11 year old son and wife, I was able to heave it up to the cabinet around 6:45 PM. A full day's job.

The pre-drilled screw holes are wrong. With typical cabinets, those holes will be just slightly off where the seams are, and will not provide good support. I ended up drill holes more off the edges. But there isn't much room to move, especially for the two front holes as they are close to the fan enclosure.

I also don't like the wood screws. Modern cheap cabinets don't have real wood for the bottom, and the screws don't provide good holding power. Plus, it is hard to turn and drive the screws. I used 1/4 " leg bolts, with washer and screws on top.

It is more convenient for me with back venting. However there is a big design flaw here. The adapter will guide the exhaust to the opening in the wall, as designed. But there are miles of gaps between the adapter and outer body, and air can be blown back to the hood if the adapter and wall don't have a tight coupling (the usual case). So I made another adapter to close the gaps - another side project.

On the plus side, once all installed, it looks good. Actual effectiveness will be known once more testing is done. For now, I assume it is good based on all other reviews.

Now thinking back, installing a range hood is not trivial, no matter what. It could be a bit easier with the design issues addressed.

Mine also comes with one of the screws holding the transformer to the body being loose. So it doesn't hurt to check and tighten them up.