Everything will inevibly break. Take my car for example, I count on it to break at least twice a month, and so far I'm ahead of schedule for the next year.

Half of my head units have had motorized faces-one Sony and two JVC's, as well as one Sony with a pass through face and one Kenwood with a flip down face. Out of the three styles, the pass through face is obviously the most convenient as far as ease of use, whereas the manual flip face was the worst. It's been my experience that a stuck CD is the most common problem with any CD player; which is not dependant on the type of face.
What have we learned in this thread? A good install makes all the difference. Do it right the first time so you won't have to do it again later. Take care of your productus and they will take care of you. Burgers are good and Metros are pimp.