Yamaha DV-C6770 5-Disc Progressive-Scan DVD-Audio/SA-CD Changer
Avoid at all costs
I was drawn to this unit because it plays everything (including both DVD-audio and SACD formats) and is a five disc changer.  Unfortunately, the unit is very slow to respond to commands, especially loading the discs and opening the tray.  Moreover, the tray doesn't rotate or come out all the way, so it is very difficult to access the back two discs. More importantly, two units have failed on me (stopped responding to commands altogether) after a couple of weeks. I have had to send both units back to the distributor full of CDs/DVDs.  This is a piece of junk!