Product review (5 stars): Love it!
We just bought this to replace an old under-cabinet microwave (our house had a vent to the roof installed, just not connected). We were debating whether to go with this model, or the all digital model that came with a remote. The reviews were substantially better with this unit (the all digital had electrical component issues it seemed). We are VERY happy with the final result. It still is partially digital, and has elegant buttons instead of clunky knobs. It looks amazing in our new kitchen remodel.

This unit requires three prong outlet (not hardwired). The vent comes out of the top of the unit, although it does come with flex tubing, so you could route it back after it routes into the cabinet, though that would probably be less than ideal. It has an automatic damper already in the unit that opens and closes when you turn it on and off. It came with 6 screws and screw supports for installation, which would have probably been fine, but for the extra support, we used locking bolts.

Pros:
Looks high end...definitely a centerpiece.
Works VERY well
Cost is very reasonable compared to other models we shopped
Easy to use
Straightforward installation.
Did I mention it looks amazing?

Cons:
The highest setting is a little loud, but we would only need to use that setting in extreme circumstances.

Very happy with the choice we made. If I had the purchase to do over again, I would.