The Denon's GUI (graphic user interface) is overlaid onto the video stream without any interruption or degradation, at all. The Marantz has an OSD (on screen display) which is a seperate screen that comes up, but only after the source video stream is dropped. There is no comparison between the two and it’s not fair to try and do so. Denon has the market cornered on this right now. Yamaha has a GUI as well, but it isn’t as slick as Denon’s.
The Marantz, as I’ve noted earlier in this thread, is lacking channel independent X-over adjustment. That alone is a deal breaker for me. I had a heck of a time calibrating the LFE channel with the SR/8001 because of this.