Got the Oppo DV971H hooked up the 990 tonight via DVI. No issues with the remote. I even tried the Outlaw remote in addition to my MX-3000.
This Oppo DVD remote really needs a backlight
Other than that, I really like it. I can't say the video quality is nay better than the HD931 but it's definitely a more flexible unit with the DIVX support and all.