Onkyo DV-CP500 5-Disc Progressive-Scan DVD Player
Problems
I purchased this unit in December, 2002.  I really enjoyed it for the first two months and then it would no longer read DVD's.  It would read a CD or an MP3-CD only.  It's currently at an authorized service center.  They believe it is an allignment or decoding problem.  Thankfully, it's under warranty.  Buy with caution.