I do not own the unit but what about:

1)Channel level adjustments at .5 dB instead of 1 dB.

2)At least one more component video in and out

3)HDMI with audio support instead of DVI

4)More precise settings for distance (than 1ft) when setting channel delay.

Please correct me if I am wrong on any of the above. These are the things that have kept me from trying the unit to replace my Yamaha RX-V2500 I am currently using as a pre/pro. That and the fact that I could not get a discount on the 990 after buying 2 of the Outlaw 755 amps because it was not within 30 days. I am also hesitant to lose the "Presence" channels the 2500 has as they add a lot to the front image and the dialog lift function really helps with the 92" screen.