Product review (4 stars): I like it, but.....
I've only had this unit for a day, and I like it so far, but I have one issue with it (which I was wondering if anyone else who purchased this has this issue).  When first powered on (and every time the unit stops and restarts), there is a loud noise coming from the back of the unit, like possibly the sound of water boiling, but much louder, and then it stops after a minute and doesn't happen again unless the unit quits making ice and then restarts.  Has anyone else had this issue? I wasn't sure if a replacement unit was going to be any different.

To answer questions from other users...

The water is filled from the front of the unit.  You must open the lid and remove the ice tray to fill the unit with water.  The ice tray rests above the water.  As the ice on the bottom of the tray slowly melts, there are openings in the ice tray to allow it to be reused to make more ice.

I wasn't sure how the ice maker was going to work after the unit makes a full container of ice (in my case, it takes about 3 hours to make a full tray of ice before it gives me the 'full' light).  When the light is illuminated, the ice machine shuts completely off, with nothing to keep the ice cool.  It's my guess that it acts somewhat like a thermos to keep the ice from melting very fast, because the unit is shut off at this point.  However, if it's full and you leave it on all night without it making ice, the ice will melt enough for the unit to start again to make more.  If you take the ice tray out, it's going to drip water from the ice on the bottom of the bin, so be careful if you don't want it to drip on anything.

I have not had this ice maker long enough to tell you how long it would last, but so far, I am happy with the purchase.  I did dock it one star though due to the loud noise that happens when the unit first turns on (the box DID say the unit was quiet, right?)  It is quiet, but only after the first minute.