Product review (4 stars): Great alternative to a service call!
The unit is of lower apparent quality than the original in the sense that it has lower mass, i.e. they have removed some aluminum etc.  But it is reasonably easy to install once you view the video available from a how-to website.  Initially, the arm that knocks out the ice stuck once or twice, but the problem went away, and six months later it is going strong.  I'm very happy I did this repair myself.  It saved me hundreds by avoiding an expensive home visit by a repairman.