Yes, being able to record HD to DVR is great, although 160GB is a tad small for HDTV. If the recorder makers decide to implement the DRM flag on HDTV broadcasts, the recording to DVD will not be possible. Hopefully the laws forcing the DRM flags to be implemented will fail to pass the courts. I'd guess that the proprietary HDTV DVD's are an attempt to satisfy the evils bastards, but if it flies, it'll be a step in the right direction. But even HD-DVR is at risk if the broadcasters and studios get their way.
I get pretty good quality DVD's by recording a 480i output from the HDTV receiver via SVHS, but you lose the DolbyDigital sound. It sure looks a lot better than the crappy "digital" picture that DirecTV and Dish broadcast, and I can use the "squeeze" options during recording to get 16:9 picture at playback with the "stretch" option.