Sony DVPCX995V 400-Disc DVD Mega Changer/Player (2009 Model)
Small correction
One small but potentially important correction to Bill's review for those who (like me) have or want to have multiple changers: this unit *DOES* support multiple command modes, allowing for up to three players to be controlled independently.  Bill is right that this unit doesn't have the command mode switch on the back to control this behavior -- instead, the command mode is set from the front panel.  (See page 16 of the manual in the link above.)