Samsung DVD711 DVD Player
Many problems
This model was unable to read and DVDs or CDs after being on for about 10 minutes.  I have exchanged it and every one has done the same thing.  I bought it at a Best Buy and they said many people had problems with this model for this reason as well as it not being able to play MP3 files (one of it's key features).  Even in the manual, it says it can't read CD-R disks which would make it tough to play MP3s