Product review (4 stars): Worked for 5 minutes, then plug gave out.  Fixed it, and now its working well.
I have revised this review from a previous version.

I had initially given this unit 1 star, I have revised it up to 4 stars.  I would have given it 5 stars, but the power plug for my unit arrived defective.

I was initially put off by the cheap construction and materials, as well as the kludgy method by which it is powered.  The build quality is cheap, especially considering the price of this unit.  It does not have the metal construction of the Moist-n-aire.  The electronics are simple enough, so given the build quality and the simplicity of the device, I can't say that the price can be justified.  Especially given that they call this their Commercial Series.  The device is powered using a ribbon cable that is connected, on one end, to the box/unit, and on the other to an intermediate connector which allows for the standard DC plug to connect.  Oddest power arrangement I have ever seen.

Given the build and design quality, I reserved my judgement until I had actually used it.

I plugged the unit in, and it fired up.  Roughly 5 minutes later, it stopped working.  As best as I could tell the DC power plug has stopped working, so I found another 12V 1ma DC power converter and plugged the unit in.  It worked, and has worked ever since.  I have a tall 2,000 cigar cabinet, and maxed out this unit does a really good job of sustaining 70% RH.

Before I fixed the unit, I ordered a Moist-n-Aire, but I am not rushing to replace this unit with the Moist-n-Aire just yet.  I am going to see how it does in the longer run and keep the solid metal construction Moist-n-Aire as a backup.