I had a Denon 3313 briefly, which I replaced twice because I originally that it was defective--in fact it was working as intended. The HDMI upconversion is very poor. I used it with my HTPC and anyone who has an HTPC knows you don't run 1080p generally because the corners get lopped off, so you need to scale the image and so the resolution ends up being different than 1080p. The text is garbled and unreadable on the desktop. But I lived with it for a while, but found out all 3 models I had had hdmi flickering/handshake issues with my PS3, so I ended up ditching it.