Magnavox MPD720 7-Inch Portable DVD Player
No problems after 1.5 years
We've had no performance issues with ours.  Have two boys, 6 & 4, who are the primary users so it's not exactly been handled with care.  It still holds up well, loads the discs with no problem.  My only complaint would be that for some movies, I'm not able to get the image bright enough to be seen clearly.  This thing has saved our sanity on many cross-country trips to visit family.  Has done well both in the car and on planes.