Product review (5 stars): Much better than my last one!
This is my second Ice Maker.  The first one I bought had the electronic "eye" that would trigger the machine to stop making ice until is was emptied.  That "eye" became defective and kept telling the machine that it was full of ice when, in fact, it wasn't.  I assume the machine was still fine and could still make ice if only the "eye" would stop telling it that it was full!  No way to fix it!  The machine was useless!
This machine uses some sort of metal bar (about 1 inch long) to detect when the ice bucket was full.  I assume that when ice lays up against the bar the bar knows it and shuts the machine down until the the bucket it emptied.
This machine makes 9 ice cubes every 9 minutes (give or take).  That doesn't sound like very much until you realize that's one ice cube per minute or 120 ice cubes in two hours.  Not bad!

I usually make a weeks worth of ice on my day off, dumping the ice into my refrigerator's freezer ice compartment each time its full.  The water reservoir is bigger in this ice maker than my old one, too.  That makes me happy.
It seems from the reviews that others have had problems with their Ivation Machine but so far (I've been using it about 6 months now) I haven't and like this machine very much.  Why 4 stars and not 5?  Simply because I've only had it for 6 months.  I'll reserve a Star for a couple of years.

Update:  Had this machine for about a year now and its still works great.  I use it about once a week;  Sitting here on a Sunday afternoon watching football and making ice.  I'll make a weeks worth of ice today, dumping the container in the refrigerator freezer till it's full.

I'm upgrading this machince from 4 stars to 5.