I kicked myself when I heard the news there was a 1080p version of this machine...however, I'll probably only want the upgrade if I get a 1080p projector maybe in the future.
As far as DVD players go, I think it's the best machine ever, in terms of its Picture and Audio capabilities. I've seen alot of HD material and although the A1XV isn't true high definition, it's the nearest thing to it, especially after I performed an ISF calibration on my Pioneer.
As long as you have a DVD with a decent picture transfer, you're in for a visual feast. I was stunned after hooking the machine up for the first time. Then, a month down the line, I got a tip-off from Denon to use the Image enhancer facility (to fully utilize the Teranex processor). After bumping it up to +6 and more or less dropping the Sharpness on the plasma to the lowest setting I was floored!
My only gripe is that the Denon has no support for HD .ts files. If the video processor can upscale DVD's to 1080p, then why not add an ethernet connection at the back of the unit to stream HD material from PC's or external Hard Drives? Now that would be something!

...and I wouldn't have the clutter of two DVD players.