Picked one up last night. This thing is light; the player, boxed and packed weighs less than my denon unboxed. I also picked up Apocolypto in Blu Ray as a first BD movie.
I just did a quick setup, using the calibration settings from my denon, and the player sets up very easily--quickly. Disc loading was as fast (if not faster) as my denon with SDVD's, so i didn't see any issues there. As you might imagine, the HD image was very nice. My Samsung DLP is only 720p native, so i set the Panny to output 720p via HDMI. The denon DVE calibration settings worked fairly well, though it looks like maybe brightness needs to bumped up just a bit, and maybe more color. I'll know more tonight when I pop out the DVE disc---yes I realize DVE is for SDVD, but it will get you very close in the ballpark.
Standard Def DVD's looked very nice as well, as far as I can tell as good as the denon dvd-2910. The Blue light on the front of the Panny is fairly irratating as it is very bright (UPDATED, this can be turned off in the setup menu); the display is dimmable. I like the simple, intuative layout of the remote, and the buttons are large, which I like.