Product review (4 stars): Great, so far.
So far, great.  Nice cube output.  Seems a bit quieter than our last ice maker (Avalon Bay), purchased just over a year ago, also through Amazon.  To compare them - Ivation and Avalon Bay are the same size (I wonder if they are basically the same machine with slightly different styling and different logos), same options (small vs large cubes is about it), similar amount of ice output.  The Ivation directions are much less thorough (no cleaning instructions at all, but I'm doing the same thing I did with the Avalon Bay, which is used only filtered water and run lemon juice through it about every 10 usages).  There is also no phone number to contact in the event of questions or  problems.  I took off a star for that.  However, I learned the limits of the warranty and nice, helpful customer service with the Avalon Bay machine: it stopped working after 8 months, they sent me a "new" one but it was obviously refurbished and died about a month after the one-year warranty expired.  So the real test is how long the machine lasts (and we're heavy ice users) and what happens if we do need to replace it within the one year.  I'll post a follow up review down the road.