Audiovox VBP500 5-Inch DVD Player-in-a-Bag Mobile Video System
Solid machine
I have had this player for about two years now and have not had a problem with it.  My kids play it constantly and the thing is built like a brick.  Once fully charged, it will play for about three hours before the battery goes dead.  It has been great for vacation trips.  The only thing that has avoided me giving it five stars is that the little plastic hook that latches the top when it closes snapped off when I was cleaning it.  Other than that, it has taken a lot of handling, traveling, and wear and tear and has kept right on working.  It has been a very reliabe unit for us.